Dell EMC PowerEdge R740 Manual

Dell EMC PowerEdge R740
Installation and Service Manual
Regulatory Model: E38S Series
Regulatory Type: E38S001

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks
may be trademarks of their respective owners.
2018 - 10
Rev. A07

Contents
1 PowerEdge R740 system overview.................................................................................................................8
Supported congurations..................................................................................................................................................8
Front view of the system.................................................................................................................................................10
Left control panel view...............................................................................................................................................12
Right control panel view............................................................................................................................................ 15
Back view of the system................................................................................................................................................. 16
NIC indicator codes.................................................................................................................................................... 18
Power supply unit indicator codes............................................................................................................................18
Drive indicator codes........................................................................................................................................................21
LCD panel..........................................................................................................................................................................22
Viewing Home screen................................................................................................................................................23
Setup menu.................................................................................................................................................................23
View menu.................................................................................................................................................................. 23
Locating the Service Tag of your system......................................................................................................................24
System information label.................................................................................................................................................24
PowerEdge R740 – Front system information label.............................................................................................. 24
PowerEdge R740 – Service information.................................................................................................................26
2 Documentation resources............................................................................................................................ 29
3 Technical specications................................................................................................................................31
System dimensions........................................................................................................................................................... 31
Chassis weight................................................................................................................................................................. 32
Processor specications................................................................................................................................................. 33
Supported operating systems.........................................................................................................................................33
PSU specications...........................................................................................................................................................33
System battery specications........................................................................................................................................ 34
Expansion bus specications..........................................................................................................................................34
Memory specications.................................................................................................................................................... 36
Storage controller specications....................................................................................................................................36
Drive specications..........................................................................................................................................................37
Drives...........................................................................................................................................................................37
Optical drive................................................................................................................................................................37
Ports and connectors specications..............................................................................................................................37
USB ports....................................................................................................................................................................37
NIC ports.....................................................................................................................................................................37
VGA ports................................................................................................................................................................... 38
Serial connector......................................................................................................................................................... 38
Internal Dual SD Module or vFlash card..................................................................................................................38
Video specications.........................................................................................................................................................38
Environmental specications..........................................................................................................................................39
Standard operating temperature..............................................................................................................................40
Contents 3

Expanded operating temperature............................................................................................................................ 40
Particulate and gaseous contamination specications..........................................................................................42
4 Initial system setup and conguration.......................................................................................................... 43
Setting up your system................................................................................................................................................... 43
iDRAC conguration........................................................................................................................................................ 43
Options to set up iDRAC IP address........................................................................................................................43
Log in to iDRAC..........................................................................................................................................................44
Options to install the operating system.........................................................................................................................44
Methods to download rmware and drivers...........................................................................................................44
Downloading drivers and rmware.......................................................................................................................... 45
5 Pre-operating system management applications..........................................................................................46
Options to manage the pre-operating system applications........................................................................................46
System Setup................................................................................................................................................................... 46
Viewing System Setup.............................................................................................................................................. 46
System Setup details................................................................................................................................................. 47
System BIOS...............................................................................................................................................................47
iDRAC Settings utility................................................................................................................................................ 66
Device Settings.......................................................................................................................................................... 67
Dell Lifecycle Controller...................................................................................................................................................67
Embedded system management..............................................................................................................................67
Boot Manager...................................................................................................................................................................67
Viewing Boot Manager..............................................................................................................................................67
Boot Manager main menu........................................................................................................................................ 68
One-shot UEFI boot menu........................................................................................................................................68
System Utilities...........................................................................................................................................................68
PXE boot...........................................................................................................................................................................68
6 Installing and removing system components................................................................................................ 69
Safety instructions...........................................................................................................................................................69
Before working inside your system................................................................................................................................69
After working inside your system...................................................................................................................................69
Recommended tools........................................................................................................................................................70
Optional front bezel......................................................................................................................................................... 70
Front bezel details......................................................................................................................................................70
Removing the front bezel..........................................................................................................................................70
Installing the front bezel.............................................................................................................................................71
System cover....................................................................................................................................................................72
Removing the system cover.....................................................................................................................................72
Installing the system cover........................................................................................................................................73
Backplane cover............................................................................................................................................................... 74
Removing the backplane cover................................................................................................................................ 74
Installing the backplane cover.................................................................................................................................. 75
Inside the system............................................................................................................................................................. 76
Air shroud.......................................................................................................................................................................... 78
4Contents

Removing the air shroud........................................................................................................................................... 78
Installing the air shroud..............................................................................................................................................79
Cooling fan assembly.......................................................................................................................................................80
Removing the cooling fan assembly........................................................................................................................ 80
Installing the cooling fan assembly........................................................................................................................... 81
Cooling fans...................................................................................................................................................................... 82
Cooling fan details......................................................................................................................................................82
Removing a cooling fan............................................................................................................................................. 83
Installing a cooling fan............................................................................................................................................... 83
Intrusion switch................................................................................................................................................................ 84
Removing an intrusion switch...................................................................................................................................84
Installing an intrusion switch.....................................................................................................................................85
NVDIMM-N battery.........................................................................................................................................................86
NVDIMM-N battery details.......................................................................................................................................86
Removing the NVDIMM-N battery from the air shroud.......................................................................................86
Installing NVDIMM-N battery into air shroud......................................................................................................... 87
Removing NVDIMM-N battery from mid drive tray.............................................................................................. 88
Installing NVDIMM-N battery into mid drive tray.................................................................................................. 89
Removing NVDIMM-N battery from the bracket..................................................................................................90
Installing NVDIMM-N battery into the bracket.......................................................................................................91
Drives.................................................................................................................................................................................92
Drive guidelines.......................................................................................................................................................... 92
Removing a drive blank............................................................................................................................................. 92
Installing a drive blank................................................................................................................................................93
Removing a drive carrier........................................................................................................................................... 93
Installing a drive carrier..............................................................................................................................................94
Removing a 2.5 inch drive from the 3.5 inch drive adapter..................................................................................95
Installing a 2.5 inch drive into the 3.5 inch drive adapter......................................................................................96
Removing a 3.5 inch adapter from a 3.5 inch drive carrier................................................................................... 97
Installing a 3.5 inch adapter into a 3.5 inch drive carrier....................................................................................... 98
Removing the drive from the drive carrier............................................................................................................. 99
Installing a drive into the drive carrier....................................................................................................................100
System memory.............................................................................................................................................................. 101
System memory guidelines...................................................................................................................................... 101
General memory module installation guidelines.................................................................................................... 103
NVDIMM-N memory module installation guidelines ........................................................................................... 104
Mode-specic guidelines.........................................................................................................................................105
Removing a memory module.................................................................................................................................. 108
Installing a memory module.....................................................................................................................................109
Processors and heat sinks.............................................................................................................................................109
Removing a processor and heat sink module....................................................................................................... 109
Removing the processor from the processor and heat sink module..................................................................110
Installing the processor into a processor and heat sink module.......................................................................... 112
Installing a processor and heat sink module...........................................................................................................114
Expansion cards and expansion card risers..................................................................................................................115
Contents 5

Expansion card installation guidelines.....................................................................................................................115
Opening and closing the PCIe card holder latch................................................................................................... 119
Removing expansion card from the expansion card riser....................................................................................120
Installing expansion card into the expansion card riser........................................................................................123
Removing riser 2 and 3 blank..................................................................................................................................125
Installing riser 2 and 3 blank.................................................................................................................................... 126
Removing riser 3 blank.............................................................................................................................................127
Installing riser 3 blank...............................................................................................................................................128
Removing expansion card riser 1............................................................................................................................ 129
Installing expansion card riser 1...............................................................................................................................130
Removing expansion card riser 2.............................................................................................................................131
Installing expansion card riser 2.............................................................................................................................. 132
Removing expansion card riser 3............................................................................................................................134
Installing expansion card riser 3.............................................................................................................................. 134
GPU card installation guidelines..............................................................................................................................135
Removing a GPU......................................................................................................................................................136
Installing a GPU.........................................................................................................................................................138
M.2 SSD module.............................................................................................................................................................144
Removing the M.2 SSD module..............................................................................................................................144
Installing the M.2 SSD module................................................................................................................................145
Optional IDSDM or vFlash module............................................................................................................................... 146
Removing the MicroSD card...................................................................................................................................146
Installing the MicroSD card......................................................................................................................................147
Removing the optional IDSDM or vFlash card...................................................................................................... 147
Installing optional IDSDM or vFlash card............................................................................................................... 148
Network daughter card..................................................................................................................................................149
Removing the network daughter card...................................................................................................................149
Installing the network daughter card..................................................................................................................... 150
Integrated storage controller card.................................................................................................................................151
Removing integrated storage controller card.........................................................................................................151
Installing integrated storage controller card.......................................................................................................... 152
Backplane........................................................................................................................................................................ 154
Backplane details......................................................................................................................................................154
Removing the backplane.........................................................................................................................................155
Installing the backplane .......................................................................................................................................... 156
Cable routing................................................................................................................................................................... 157
System battery............................................................................................................................................................... 163
Replacing the system battery................................................................................................................................. 163
USB 3.0 module..............................................................................................................................................................164
USB 3.0 module details............................................................................................................................................164
Removing USB 3.0 module......................................................................................................................................165
Installing USB 3.0 module........................................................................................................................................165
Optional internal USB memory key.............................................................................................................................. 166
Optional internal USB memory key details............................................................................................................ 166
Replacing the optional internal USB memory key.................................................................................................167
6Contents

Optional optical drive......................................................................................................................................................167
Removing the optional optical drive....................................................................................................................... 167
Installing the optional optical drive......................................................................................................................... 168
Power supply units......................................................................................................................................................... 169
Power supply unit details.........................................................................................................................................169
Hot spare feature......................................................................................................................................................170
Removing a power supply unit blank......................................................................................................................170
Installing a power supply unit blank.........................................................................................................................171
Removing a power supply unit.................................................................................................................................171
Installing a power supply unit.................................................................................................................................. 172
Wiring instructions for a DC power supply unit.................................................................................................... 173
System board.................................................................................................................................................................. 175
Removing system board.......................................................................................................................................... 175
Installing system board.............................................................................................................................................176
Trusted Platform Module............................................................................................................................................... 178
Upgrading the Trusted Platform Module...............................................................................................................179
Initializing TPM for BitLocker users....................................................................................................................... 180
Initializing the TPM 1.2 for TXT users....................................................................................................................180
Initializing the TPM 2.0 for TXT users................................................................................................................... 180
Control panel....................................................................................................................................................................181
Control panel details..................................................................................................................................................181
Removing the left control panel.............................................................................................................................. 181
Installing the left control panel................................................................................................................................182
Removing the right control panel........................................................................................................................... 183
Installing the right control panel..............................................................................................................................184
7 Using system diagnostics........................................................................................................................... 186
Dell Embedded System Diagnostics.............................................................................................................................186
Running the Embedded System Diagnostics from Boot Manager.....................................................................186
Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................186
System diagnostic controls......................................................................................................................................187
8 Jumpers and connectors ........................................................................................................................... 188
System board jumpers and connectors....................................................................................................................... 189
System board jumper settings.......................................................................................................................................191
Disabling forgotten password........................................................................................................................................ 191
9 Getting help............................................................................................................................................... 192
Contacting Dell EMC......................................................................................................................................................192
Documentation feedback.............................................................................................................................................. 192
Accessing system information by using QRL..............................................................................................................192
Quick Resource Locator for PowerEdge R740 and R740xd systems................................................................193
Receiving automated support with SupportAssist ....................................................................................................193
Recycling or End-of-Life service information..............................................................................................................193
Contents 7

PowerEdge R740 system overview
The PowerEdge R740 is a 2U rack server that supports up to:
• Two Intel Xeon Scalable Processors
• 24 DIMM slots
• Two AC or DC power supply units
• 16 SAS, SATA, Nearline SAS hard drives or SSDs. For more information about supported drives, see the Technical specications section.
NOTE: All instances of SAS, SATA hard drives, NVMe and SSDs are referred to as drives in this document, unless specied
otherwise.
Topics:
• Supported congurations
• Front view of the system
• Back view of the system
• Drive indicator codes
• LCD panel
• Locating the Service Tag of your system
• System information label
Supported congurations
The PowerEdge R740 system supports the following congurations:
1
8 PowerEdge R740 system overview

Figure 1. Supported congurations
PowerEdge R740 system overview 9

Front view of the system
The front view displays the features available on the front of the system.
Figure 2. Front view of 16 x 2.5 inch drive system
Table 1. Features available on the front of 16 x 2.5 inch drive system
Item Ports, panels and slots Icon Description
1 Left control panel N/A Contains system health and system ID, status LED and optional
iDRAC Quick Sync 2 (wireless).
2 Drive slots N/A Enable you to install drives that are supported on your system. For
more information about drives, see Technical specications section.
3 Optical drive (optional) N/A Enables you to retrieve and store data on optical discs such as
compact discs (CD) and digital versatile discs (DVD). For more
information, see Technical specications section.
4 USB 3.0 port (optional) The USB ports are 9-pin, 3.0-compliant. These ports enable you to
connect USB devices to the system.
5 Right control panel N/A Contains the power button, VGA port, iDRAC Direct micro USB port,
and two USB 2.0 ports.
6 Information tag N/A The Information Tag is a slide-out label panel that contains system
information such as Service Tag, NIC, MAC address, and so on. If you
have opted for the secure default access to iDRAC, the Information
tag also contains the iDRAC secure default password.
10 PowerEdge R740 system overview

Figure 3. Front view of 8 x 2.5-inch drive system
Table 2. Features available on the front of 8 x 2.5-inch drive system
Item Ports, panels and slots Icon Description
1 Left control panel N/A Contains system health and system ID, status LED and optional
iDRAC Quick Sync 2 (wireless).
2 Drive slots N/A Enable you to install drives that are supported on your system. For
more information about drives, see Technical specications section.
3 Optical drive (optional) N/A Enables you to retrieve and store data on optical discs such as
compact discs (CD) and digital versatile discs (DVD). For more
information, see Technical specications section.
4 USB 3.0 port (optional) The USB ports are 9-pin, 3.0-compliant. These ports enable you to
connect USB devices to the system.
5 Right control panel N/A Contains the power button, VGA port, iDRAC Direct micro USB port,
and two USB 2.0 ports.
6 Information tag N/A The Information Tag is a slide-out label panel that contains system
information such as Service Tag, NIC, MAC address, and so on. If you
have opted for the secure default access to iDRAC, the Information
tag also contains the iDRAC secure default password.
Figure 4. Front view of 8 x 3.5 inch drive system
PowerEdge R740 system overview 11

Table 3. Features available on the front of 8 x 3.5 inch drive system
Item Ports, panels and slots Icon Description
1 Left control panel N/A Contains system health and system ID, status LED and optional
iDRAC Quick Sync 2 (wireless).
2 Drive slots N/A Enable you to install drives that are supported on your system. For
more information about drives, see Technical specications section.
3 USB 3.0 port (optional) The USB ports are 9-pin, 3.0-compliant. These ports enable you to
connect USB devices to the system.
4 Optical drive (optional) N/A Enables you to retrieve and store data on optical discs such as
compact discs (CD) and digital versatile discs (DVD). For more
information, see Technical specications section.
5 Right control panel N/A Contains the power button, VGA port, iDRAC Direct micro USB port,
and two USB 2.0 ports.
6 Information tag N/A The Information Tag is a slide-out label panel that contains system
information such as Service Tag, NIC, MAC address, and so on. If you
have opted for the secure default access to iDRAC, the Information
tag also contains the iDRAC secure default password.
Left control panel view
Figure 5. Left control panel with optional iDRAC Quick Sync 2.0 indicator
Table 4. Left control panel
Item Indicator, button, or
connector
Icon Description
1 Status LED indicators N/A Indicate the status of the system. For more information, see the
Status LED indicators section.
2 System health and system
ID indicator
Indicates the system health. For more information, see the System
health and system ID indicator codes section.
3 iDRAC Quick Sync 2
wireless indicator (optional)
Indicates if the iDRAC Quick Sync 2 wireless option is activated. The
Quick Sync 2 feature allows management of the system using mobile
devices. This feature aggregates hardware/rmware inventory and
various system level diagnostic/error information that can be used in
troubleshooting the system. You can access system inventory, Dell
Lifecycle Controller logs or system logs, system health status, and
12 PowerEdge R740 system overview

Item Indicator, button, or
connector
Icon Description
also congure iDRAC, BIOS, and networking parameters. You can also
launch the virtual Keyboard, Video, and Mouse (KVM) viewer and
virtual Kernel based Virtual Machine (KVM), on a supported mobile
device. For more information, see the Integrated Dell Remote Access
Controller User's Guide at Dell.com/poweredgemanuals.
Status LED indicators
NOTE: The indicators display solid amber if any error occurs.
Table 5. Status LED indicators and descriptions
Icon Description Condition Corrective action
Drive
indicator
The indicator turns solid amber if
there is a drive error. • Check the System Event Log to determine if the drive has an error.
• Run the appropriate Online Diagnostics test. Restart the system and
run embedded diagnostics (ePSA).
• If the drives are congured in a RAID array, restart the system, and
enter the host adapter conguration utility program.
Temperature
indicator
The indicator turns solid amber if
the system experiences a thermal
error (for example, the ambient
temperature is out of range or
there is a fan failure).
Ensure that none of the following conditions exist:
• A cooling fan has been removed or has failed.
• System cover, air shroud, memory module blank, or back ller bracket is
removed.
• Ambient temperature is too high.
• External airow is obstructed.
If the problem persists, see Getting help.
Electrical
indicator
The indicator turns solid amber if
the system experiences an
electrical error (for example,
voltage out of range, or a failed
power supply unit (PSU) or voltage
regulator).
Check the System Event Log or system messages for the specic issue. If
it is due to a problem with the PSU, check the LED on the PSU. Reseat the
PSU.
If the problem persists, see Getting help.
Memory
indicator
The indicator turns solid amber if a
memory error occurs.
Check the System Event Log or system messages for the location of the
failed memory. Reseat the memory module.
If the problem persists, see Getting help.
PCIe
indicator
The indicator turns solid amber if a
PCIe card experiences an error.
Restart the system. Update any required drivers for the PCIe card. Reinstall
the card.
If the problem persists, see Getting help.
NOTE: For more information about the supported PCIe cards, see
Expansion card installation guidelines.
PowerEdge R740 system overview 13

System health and system ID indicator codes
The system health and system ID indicator is located on the left control panel of your system.
Figure 6. System health and system ID indicators
Table 6. System health and system ID indicator codes
System health and system ID indicator code Condition
Solid blue Indicates that the system is turned on, system is healthy, and system
ID mode is not active. Press the system health and system ID button
to switch to system ID mode.
Blinking blue Indicates that the system ID mode is active. Press the system health
and system ID button to switch to system health mode.
Solid amber Indicates that the system is in fail-safe mode.
If the problem persists, see the Getting help section.
Blinking amber Indicates that the system is experiencing a fault. Check the System
Event Log or the LCD panel, if available on the bezel, for specic error
messages.
For more information about error messages, see the Event and Error
Message Reference Guide for 14th Generation Dell EMC PowerEdge
Servers at Dell.com/qrl.
iDRAC Quick Sync 2 indicator codes
iDRAC Quick Sync 2 module (optional) is located on the left control panel of your system.
Figure 7. iDRAC Quick Sync 2 indicators
Table 7. iDRAC Quick Sync 2 indicators and descriptions
iDRAC Quick Sync 2 indicator
code
Condition Corrective action
O (default state) Indicates that the iDRAC Quick Sync 2
feature is turned o. Press the iDRAC Quick
If the LED fails to turn on, reseat the left control panel
ex cable and check. If the problem persists, see
Getting help.
14 PowerEdge R740 system overview

iDRAC Quick Sync 2 indicator
code
Condition Corrective action
Sync 2 button to turn on the iDRAC Quick
Sync 2 feature.
Solid white Indicates that iDRAC Quick Sync 2 is ready
to communicate. Press the iDRAC Quick
Sync 2 button to turn o.
If the LED fails to turn o, restart the system. If the
problem persists, see Getting help.
Blinks white rapidly Indicates data transfer activity. If the indicator continues to blink indenitely, see
Getting help.
Blinks white slowly Indicates that rmware update is in
progress.
If the indicator continues to blink indenitely, see
Getting help.
Blinks white ve times rapidly and
then turns o
Indicates that the iDRAC Quick Sync 2
feature is disabled.
Check if iDRAC Quick Sync 2 feature is congured to
be disabled by iDRAC. If the problem persists, see the
Getting help section. For more information, see
Integrated Dell Remote Access Controller User's
Guide at Dell.com/poweredgemanuals or Dell
OpenManage Server Administrator User’s Guide at
Dell.com/openmanagemanuals > OpenManage Server
Administrator.
Solid amber Indicates that the system is in fail-safe
mode.
Restart the system. If the problem persists, see
Getting help.
Blinking amber Indicates that the iDRAC Quick Sync 2
hardware is not responding properly.
Restart the system. If the problem persists, see
Getting help.
Right control panel view
Figure 8. Right control panel view
Table 8. Right control panel features
Item Indicator, button, or
connector
Icon Description
1 Power button Indicates if the system is turned on or o. Press the power button to
manually turn on or o the system.
PowerEdge R740 system overview 15

Item Indicator, button, or
connector
Icon Description
NOTE: Press the power button to gracefully shut down an
ACPI-compliant operating system.
2 USB port (2) The USB ports are 4-pin, 2.0-compliant. These ports enable you to
connect USB devices to the system.
3 iDRAC Direct port The iDRAC Direct port is micro USB 2.0-compliant. This port enables
you to access the iDRAC Direct features. For more information, see
the iDRAC User’s Guide at Dell.com/poweredgemanuals.
4 iDRAC Direct LED N/A The iDRAC Direct LED indicator lights up to indicate that the iDRAC
Direct port is connected. For more information, see the iDRAC Direct
LED indicator codes section.
5 VGA port Enables you to connect a display device to the system. For more
information, see the Technical specication section.
iDRAC Direct LED indicator codes
The iDRAC Direct LED indicator lights up to indicate that the port is connected and is being used as a part of the iDRAC subsystem.
iDRAC Direct LED indicator is located below the iDRAC Direct port on the right control panel.
You can congure iDRAC Direct by using a USB to micro USB (type AB) cable, which you can connect to your laptop or tablet. The
following table describes iDRAC Direct activity when the iDRAC Direct port is active:
Table 9. iDRAC Direct LED indicator codes
iDRAC Direct LED
indicator code
Condition
Solid green for two seconds Indicates that the laptop or tablet is connected.
Flashing green (on for two
seconds and o for two
seconds)
Indicates that the laptop or tablet connected is recognized.
Turns o Indicates that the laptop or tablet is unplugged.
Back view of the system
The back view of the system provides access to the features available on the back of the server.
16 PowerEdge R740 system overview

Figure 9. Back view of three riser system
Table 10. Features available on the back view
Item Panels, ports and slots Icon Description
1 Full-height PCIe expansion
card slot (3)
N/A The PCIe expansion card slot (riser 1) connects up to three full-height
PCIe expansion cards to the system. For more information, see the
Expansion card installation guidelines section.
2 Half-height PCIe expansion
card slot
N/A The PCIe expansion card slot (riser 2) connects one half-height PCIe
expansion cards to the system. For more information, see Expansion card
installation guidelines section.
3 Rear handle N/A The rear handle can be removed to enable any external cabling of PCIe
cards that are installed in the PCIe expansion card slot 6.
4 Full-height PCIe expansion
card slot (2)
N/A The PCIe expansion card slot (riser 2) connects up to two full-height
PCIe expansion cards to the system. For more information, see
Expansion card installation guidelines section.
5 Full-height PCIe expansion
card slot (2)
N/A The PCIe expansion card slot (riser 3) connects up to two full-height
PCIe expansion cards to the system. For more information, see
Expansion card installation guidelines section.
6 Power supply unit (2) N/A For more information, see Technical specications section.
7 NIC ports The NIC ports that are integrated on the network daughter card (NDC)
provide network connectivity. For more information about the supported
congurations, see Technical specications section.
8 USB port (2) The USB ports are 9-pin and 3.0-compliant. These ports enable you to
connect USB devices to the system.
9 VGA port Enables you to connect a display device to the system. For more
information, see the Technical specications section.
10 Serial port Enables you to connect a serial device to the system. For more
information, see the Technical specications section.
11 iDRAC9 dedicated port Enables you to remotely access iDRAC. For more information, see the
iDRAC User’s Guide at Dell.com/poweredgemanuals.
12 System identication button The System Identication (ID) button is available on the front and back of
the systems. Press the button to identify a system in a rack by turning on
PowerEdge R740 system overview 17

Item Panels, ports and slots Icon Description
the system ID button. You can also use the system ID button to reset
iDRAC and to access BIOS using the step through mode.
NIC indicator codes
Each NIC on the back of the system has indicators that provide information about the activity and link status. The activity LED indicator
indicates if data is owing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 10. NIC indicator codes
1 link LED indicator 2 activity LED indicator
Table 11. NIC indicator codes
Status Condition
Link and activity indicators are o The NIC is not connected to the network.
Link indicator is green and activity indicator is blinking green The NIC is connected to a valid network at its maximum port speed and
data is being sent or received.
Link indicator is amber and activity indicator is blinking
green
The NIC is connected to a valid network at less than its maximum port
speed and data is being sent or received.
Link indicator is green and activity indicator is o The NIC is connected to a valid network at its maximum port speed and
data is not being sent or received.
Link indicator is amber and activity indicator is o The NIC is connected to a valid network at less than its maximum port
speed and data is not being sent or received.
Link indicator is blinking green and activity is o NIC identify is enabled through the NIC conguration utility.
Power supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator.
The DC PSUs have an LED that serves as an indicator.
The indicator shows whether power is present or if a power fault has occurred.
18 PowerEdge R740 system overview

Figure 11. AC PSU status indicator
1 AC PSU status indicator/handle
Table 12. AC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When the rmware of the PSU is being updated, the PSU handle blinks green.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating rmware. If
rmware update is interrupted, the PSUs do not function.
Blinking green and turns o When hot-plugging a PSU, the PSU handle blinks green ve times at a rate of 4 Hz and turns o. This
indicates a PSU mismatch with respect to eciency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label; for
example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations of
PowerEdge servers is not supported, even if the PSUs have the same power rating. This results
in a PSU mismatch condition or failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking indicator.
Swapping the PSU to make a matched pair can result in an error condition and unexpected
system shutdown. To change from a high output conguration to a low output conguration or
vice versa, you must turn o the system.
CAUTION: AC PSUs support both 240 V and 120 V input voltages with the exception of Titanium
PSUs, which support only 240 V. When two identical PSUs receive dierent input voltages, they
can output dierent wattages, and trigger a mismatch.
CAUTION: If two PSUs are used, they must be of the same type and have the same maximum
output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
PowerEdge R740 system overview 19

Figure 12. DC PSU status indicator
1 DC PSU status indicator
Table 13. DC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When hot-plugging a PSU, the PSU indicator blinks green. This indicates that there is a PSU mismatch
with respect to eciency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label; for
example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations
of PowerEdge servers is not supported, even if the PSUs have the same power rating. This
results in a PSU mismatch condition or failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking
indicator. Swapping the PSU to make a matched pair can result in an error condition and
unexpected system shutdown. To change from a High Output conguration to a Low Output
conguration or vice versa, you must turn o the system.
CAUTION: If two PSUs are used, they must be of the same type and have the same
maximum output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
20 PowerEdge R740 system overview