Gigabyte MW83-RP0 User manual

MW83-RP0
Intel® Xeon W Workstation Board
User Manual
Rev. 1.0

Copyright
© 2023 Giga Computing Technology CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of Giga Computing.
Changes to the specications and features in this manual may be made by Giga Computing
without prior notice. No part of this manual may be reproduced, copied, translated, transmitted, or
published in any form or by any means without Giga Computing's prior written permission.
Documentation Classications
In order to assist in the use of this product, Giga Computing provides the following types of documen-
tation:
 User Manual: detailed information & steps about the installation, conguration and use of this
product (e.g. motherboard, server barebones), covering hardware and BIOS.
User Guide: detailed information about the installation & use of an add-on hardware or
software component (e.g. BMC rmware, rail-kit) compatible with this product.
Quick Installation Guide: a short guide with visual diagrams that you can reference easily for
installation purposes of this product (e.g. motherboard, server barebones).
Please see the support section of the online product page to check the current availability of these
documents.
For More Information
For related product specications, the latest rmware and software, and other information please visit our website at
http://www.gigabyte.com/Enterprise
For GIGABYTE distributors and resellers, additional sales & marketing materials are available from our reseller
portal: http://reseller.b2b.gigabyte.com
For further technical assistance, please contact your GIGABYTE representative or visit
https://esupport.gigabyte.com/ to create a new support ticket
For any general sales or marketing enquiries, you may also message GIGABYTE server directly by email:
server[email protected]

- 3 -
Table of Contents
MW83-RP0 Motherboard Layout.....................................................................................5
Block Diagram .................................................................................................................7
Chapter 1 Hardware Installation .....................................................................................8
1-1 Installation Precautions.................................................................................... 8
1-2 ProductSpecications...................................................................................... 9
1-3 Installing and Removing the CPU .................................................................. 11
1-4 Installing and Removing Memory................................................................... 13
1-4-1 8-ChannelMemoryConguration..........................................................................13
1-4-2 Installing and Removing a Memory Module ..........................................................14
1-4-3 DIMM Population Table .........................................................................................14
1-5 Installing the M.2 SSD Module....................................................................... 15
1-6 Back Panel Connectors.................................................................................. 16
1-7 Internal Connectors........................................................................................ 18
1-8 Jumper Settings ............................................................................................. 27
Chapter 2 BIOS Setup ..................................................................................................28
2-1 The Main Menu .............................................................................................. 30
2-2 Advanced Menu ............................................................................................. 33
2-2-1 Trusted Computing .................................................................................................34
2-2-2 Serial Port Console Redirection .............................................................................36
2-2-3 SIOConguration...................................................................................................39
2-2-4 PCI Subsystem Settings.........................................................................................40
2-2-5 USBConguration..................................................................................................42
2-2-6 NetworkStackConguration..................................................................................43
2-2-7 PostReportConguration ......................................................................................44
2-2-8 NVMeConguration ...............................................................................................45
2-2-9 ChipsetConguration.............................................................................................46
2-2-10 TlsAuthConguration ............................................................................................47
2-2-11 iSCSIConguration................................................................................................48
2-2-12 Intel(R) Ethernet Controller X710 for 10GBASE-T .................................................49
2-2-13 VLANConguration................................................................................................51
2-2-14 Driver Health...........................................................................................................52
2-3 Chipset Menu................................................................................................. 53
2-3-1 ProcessorConguration.........................................................................................54
2-3-2 CommonRefCodeConguration ...........................................................................57
2-3-3 UPIConguration ...................................................................................................58
2-3-4 MemoryConguration ............................................................................................59

- 4 -
2-3-5 IIOConguration ....................................................................................................62
2-3-6 AdvancedPowerManagementConguration........................................................64
2-3-7 PCHConguration..................................................................................................66
2-3-8 MiscellaneousConguration ..................................................................................68
2-3-9 ServerMEConguration ........................................................................................69
2-3-10 Runtime Error Logging Settings .............................................................................70
2-3-11 Power Policy...........................................................................................................72
2-4 Server Management Menu............................................................................. 74
2-4-1 System Event Log ..................................................................................................76
2-4-2 View FRU Information ............................................................................................77
2-4-3 BMCVLANConguration.......................................................................................78
2-4-4 BMCNetworkConguration...................................................................................79
2-4-5 IPv6BMCNetworkConguration...........................................................................80
2-5 Security Menu ................................................................................................ 81
2-5-1 Secure Boot ...........................................................................................................82
2-6 Boot Menu...................................................................................................... 85
2-7 Save & Exit Menu........................................................................................... 87
2-8 BIOS Recovery .............................................................................................. 89
2-9 BIOS POST Beep code (AMI standard)......................................................... 90
2-9-1 PEI Beep Codes.....................................................................................................90
2-9-2 DXE Beep Codes ................................................................................................ 90+

- 5 -
MW83-RP0 Motherboard Layout
CPU0
DIMM_P0_D0 DIMM_P0_C0 DIMM_P0_B0 DIMM_P0_A0 DIMM_P0_H0 DIMM_P0_E0 DIMM_P0_F0 DIMM_P0_G0
1 5 6 72 3 4 8
9
10
11
12
131415161718
20
19
21
22
23
24
26
27
25
28
30
33
32
31 34 35 36 37 403938
29

- 6 -
Item Code Description
1 LED_BMC BMC Firmware Readiness LED
2 AUDIO Audio Connectors
3 LAN1 10GbE LAN Port #1
4 LAN2 10GbE LAN Port #2
5 USB3_MLAN Server Management LAN Port (Top)/USB 3.2 Gen2 Type A Ports (Bottom)
6 USB32A/USB32C USB 3.2 Gen2 Type A Port (Top)/USB 3.2 Gen2 Type C Port (Bottom)
7 COM1_VGA Serial Port (Top)/VGA Port (Bottom)
8 SW_ID ID Button with LED
9 CPU0_FAN CPU Fan Connector
10 ATX1 2x12 Pin Main Power Connector
11 P12V_AUX2 2x4 Pin 12V Power Connector
12 PMBUS PMBus Connector
13 P12V_AUX1 2x4 Pin 12V Power Connector
14 BAT Battery Socket
15 SYS_FAN5 System Fan Connector #5
16 SL_SATA2 Slimline Connector #2 (SATA 6Gb/s Signal)
17 SL_SATA1 Slimline Connector #1 (SATA 6Gb/s Signal)
18 SYS_FAN2 System Fan Connector #2
19 SYS_FAN1 System Fan Connector #1
20 SYS_FAN3 System Fan Connector #3
21 SYS_FAN4 System Fan Connector #4
22 F_USB3 Front Panel USB 3.2 Gen2 Connector
23 FP_1 Front Panel Header
24 M2_0 M.2 Slot (PCIe Gen4 x4, Support NGFF-2280)
25 M2_1 M.2 Slot (PCIe Gen4 x4, Support NGFF-2280)
26 SPI_TPM TPM Connector
27 SW_RAID VROC Module Connector
28 BP_1 HDD Backplane Board Connector
29 CASE_OPEN Case Open Intrusion Alert Header
30 SYS_FAN6 System Fan Connector #6
31 IPMB IPMB Connector
32 CN_NCSI NCSI Connector
33 F_AUDIO1 Front Audio Header
34 PCIE_1 PCIe x16 Slot (Gen4 x16)
35 PCIE_2 PCIe x16 Slot (Gen4 x16)
36 PCIE_3 PCIe x16 Slot (Gen4 x16)
37 PCIE_4 PCIe x16 Slot (Gen5 x16)
38 PCIE_5 PCIe x16 Slot (Gen5 x16)
39 PCIE_6 PCIe x16 Slot (Gen5 x16)
40 PCIE_7 PCIe x16 Slot (Gen5 x16)

- 7 -
Block Diagram

- 8 -
Hardware Installation
1-1 Installation Precautions
The motherboard contains numerous delicate electronic circuits and components which can
become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read
the user's manual and follow these procedures:
• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
• Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
• When connecting hardware components to the internal connectors on the motherboard,
make sure they are connected tightly and securely.
• When handling the motherboard, avoid touching any metal leads or connectors.
• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist
strap,keepyourhandsdryandrsttouchametalobjecttoeliminatestaticelectricity.
• Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
• Before unplugging the power supply cable from the motherboard, make sure the power
supply has been turned off.
• Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
• Before using the product, please verify that all cables and power connectors of your
hardware components are connected.
• To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
• Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
• Do not place the computer system on an uneven surface .
• Do not place the computer system in a high-temperature environment.
• Turning on the computer power during the installation process can lead to damage to
system components as well as physical harm to the user.
• If you are uncertain about any installation steps or have a problem related to the use of the
product,pleaseconsultacertiedcomputertechnician.
• To avoid any potential short circuit of the DIMM slots, please remove any stand-offs from the
chassis that will be located underneath the DIMM slots, before installing the motherboard
into the chassis.
Chapter 1 Hardware Installation

- 9 -
Hardware Installation
1-2 Product Specications
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Form Factor CEB
304.8W x 266.7D (mm)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
CPU Intel® Xeon® W-3400 Processor Family
Processor TDP up to 350W
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Socket 1 x LGA 4677
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Chipset Intel® W790 Chipset
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Memory 8 x DIMM slots
DDR5 memory module supported only
8-channel memory architecture
RDIMM modules up to 64GB supported
RDIMM-3DS modules up to 256GB supported
Memory speed: up to 4800 MHz
NOTE:Wheninstallingmemorymodules,makesuretobeginwiththerstsocketof
each channel, such as DIMM_P0_A0, DIMM_P0_B0, DIMM_P0_C0, DIMM_P0_D0
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
LAN 2 x 10 GbE LAN ports (Intel® X710-AT2)
1 x 10/100/1000 Management LAN (Realtek® RTL8211FD)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Onboard
Graphics
Integrated in Aspeed® AST2600:
- 1 x VGA Port
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Audio Realtek® ALC897 controller
Supports2/4/5.1/7.1channelcongurations
3 ports Audio Jack (Audio in/Audio out/Mic)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Storage Interface
2 x SlimSAS (with 8 x SATA 6Gb/s) ports
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
RAID Intel® SATA RAID 0/1/10/5
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Expansion Slots Slot_7: 1 x PCIe x16 (Gen5 x16 bus) slot
Slot_6: 1 x PCIe x16 (Gen5 x16 bus) slot
Slot_5: 1 x PCIe x16 (Gen5 x16 bus) slot
Slot_4: 1 x PCIe x16 (Gen5 x16 bus) slot
Slot_3: 1 x PCIe x16 (Gen4 x16 bus) slot
Slot_2: 1 x PCIe x16 (Gen5 x16 bus) slot
Slot_1: 1 x PCIe x16 (Gen4 x16 bus) slot
2 x M.2 slots:
- M-key
- PCIe Gen4 x4
- Supports NGFF-2280 cards
NOTE:
We reserve the right to make any changes to the product specications and product-related
information without prior notice.

- 10 -
Hardware Installation
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Expansion Slots 2 x U.2 connector:
- M-key
- slimSAS type
- 8 x SATA 6Gb/s
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Internal I/O
Connectors
1 x 24-pin ATX main power connector
2 x 8-pin ATX 12V power connectors for CPU and DDR 12V input
1 x CPU fan header
6 x System fan headers
2 x USB 3.2 Gen1 headers
1 x Front audio header
1 x PMBus connector
1xClearCMOSjumper
2 x slimSAS ports
2 x M.2 slot
1 x Front panel header
1 x Back plane board header
1 x TPM header
1 x VROC connector
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Rear I/O
Connectors
1 x VGA
1 x COM
2 x RJ45
1 x MLAN
3 x USB 3.2 Gen2 Type-A
1 x USB3.2 Gen2 Type-C
1 x ID button with LED
3xAudiojacks
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
TPM 1 x TPM Header with SPI Interface
Optional TPM2.0 kit: CTM010
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Board
Management
Aspeed® AST2600 Management Controller
GIGABYTE Management Console (AMI MegaRAC SP-X) Web Interface
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Operating
Properties Operating temperature: 10°C to 40°C
Operating humidity: 8-80% (non-condensing)
Non-operating temperature: -40°C to 60°C
Non-operating humidity: 20%-95% (non-condensing)

- 11 -
Hardware Installation
1-3 Installing and Removing the CPU
Read the following guidelines before you begin to install the CPU:
• Make sure that the motherboard supports the CPU.
• Always turn off the computer and unplug the power cord from the power outlet before installing
the CPU to prevent hardware damage.
• Unplug all cables from the power outlets.
• Disconnect all telecommunication cables from their ports.
• Placethesystemunitonaatandstablesurface.
• Open the system according to the instructions.
WARNING!
Failure to properly turn off the server before you start installing components may cause serious
damage. Do not attempt the procedures described in the following sections unless you are a
qualiedservicetechnician.
Follow these instructions to Install the CPU:
1. Align and install the processor on the carrier.
NOTE: Apply thermal compound evenly on the top of the CPU. Remove the protective cover from
the underside of the heat sink.
2. Carefullyiptheheatsinkcover.Theninstallthecarrierassemblyonthebottomoftheheatsink
and make sure the gold arrow is located in the correct direction.
3. Remove the CPU cover.
NOTE: Save the CPU cover in the event that you need to remove the CPU from the socket.
4. Align the heat sink with the CPU socket by the guide pins and make sure the gold arrow is located
in the correct direction. Then place the heat sink onto the top of the CPU socket.
5. Position the rotating wires into the latch position. Tighten the screws in a sequential order
(1g2g3g4).
NOTE: When dissembling the heat sink, loosen the screws in reverse order (4g3g2g1) and
then move the rotating wires into the unlatch position.
Pin1 1
2

- 12 -
Hardware Installation
3
4
5
1
2
3
4
Note!
• The illustrations of the heat-sink installation shown are for reference only..

- 13 -
Hardware Installation
1-4 Installing and Removing Memory
Read the following guidelines before you begin to install the memory:
•Make sure that the motherboard supports the memory. It is recommended to use memory of the
same capacity, brand, speed, and chips.
•Always turn off the computer and unplug the power cord from the power outlet before installing
the memory to prevent hardware damage.
•Memory modules have a foolproof design. A memory module can be installed in only one
direction. If you are unable to insert the memory, switch the direction.
1-4-1 8-Channel Memory Conguration
This motherboard provides 8 DDR5 memory slots and supports 8-Channel Technology. After the memory
isinstalled,theBIOSwillautomaticallydetectthespecicationsandcapacityofthememory.
CPU0
DIMM_P0_D0 DIMM_P0_C0 DIMM_P0_B0 DIMM_P0_A0 DIMM_P0_H0 DIMM_P0_E0 DIMM_P0_F0 DIMM_P0_G0

- 14 -
Hardware Installation
1-4-2 Installing and Removing a Memory Module
Before installing a memory module, make sure to turn off the computer and unplug the
power cord from the power outlet to prevent damage to the memory module.
Be sure to install DDR5 DIMMs on this motherboard.
1
2
2
Follow these instructions to install a DIMM module:
1. Insert the DIMM memory module vertically into the DIMM slot and push it down.
2. Close the plastic clip at both edges of the DIMM slots to lock the DIMM module.
3. Reverse the installation steps when you want to remove the UDIMM module.
1-4-3 DIMM Population Table
Type Ranks Per DIMM
and Data Width
DIMM
Capacity
(GB)
Speed (MT/s); Voltage (V);
DIMM per Channel (DPC)
1DPC*
16Gb 1.1V
RDIMM
SRx8 (RC D) 16GB
4800
SRx4 (RC C) 32GB
SRx4 (RC F) 9x4 32GB
DRx8 (RC E) 32GB
DRx4 (RC A) 64GB
DRx4 (RC B) 9x4 64GB
RDIMM 3DS (4R/8R)x4
(RC A)
2H-128GB
4H-256GB
*1DPC applies to 1SPC or 2SPC implementations (SPC - Sockets Per Channel)

- 15 -
Hardware Installation
1-5 Installing the M.2 SSD Module
Follow the steps below to install a M.2 SSD module on your motherboard.
Step1. Insert the M.2 SSD module into the slot.
Step2. Secure it with the screw, tightening as necessary to fasten the M.2 SSD module in place.
1
2

- 16 -
Hardware Installation
1-6 Back Panel Connectors
1ID button with LED
Whenthesystemidenticationisactive,theIDLEDonthefront/backpanelglowsblue.
2Serial Port
Connect to serial-based mouse or data processing devices.
3VGA Port
Connect to a monitor device.
4USB 3.2 Gen2 Type-A Port
The USB port supports the USB 3.2 specification. Use this port for USB devices such as a USB
keyboard/mouse,USBprinter,USBashdriveetc.
5USB 3.2 Gen2 Type-C Port
The USB port supports the USB 3.2 specification. Use this port for USB devices such as a USB
keyboard/mouse,USBprinter,USBashdriveetc.
6Server Management LAN Port
The LAN port provides Internet connection with data transfer speeds of 10/100/1000Mbps. This port is
the dedicated LAN port for Server Management.
7USB 3.2 Gen2 Ports
The USB port supports the USB 3.2 specification. Use this port for USB devices such as a USB
keyboard/mouse,USBprinter,USBashdriveetc.
810GbE LAN Port #2
The Gigabit Ethernet LAN port provides Internet connection at up to 10 Gbps data rate. See the section
below for a description of the states of the LAN port LEDs.
910GbE LAN Port #1
The Gigabit Ethernet LAN port provides Internet connection at up to 10 Gbps data rate. See the section
below for a description of the states of the LAN port LEDs.
10 Line In Jack (Blue)
ThedefaultLineinjack.Usethisaudiojackforlineindevicessuchasanopticaldrive,walkman,etc
11 Line Out Jack (Green)
ThedefaultLineOutjack.Usethisaudiojackforaheadphoneor2-channelspeaker.Thisjackcanbe
usedtoconnectfrontspeakersina4/5.1/7.1-channelaudioconguration.
12 Mic In Jack (Pink)
ThedefaultMICInjack.AmicrophonecanbeconnectedtotheMICInjack.
1
2
3
4
5
6
7
8 9
10
11
12

- 17 -
Hardware Installation
• Whenremovingthecableconnectedtoabackpanelconnector,rstremovethecablefromyour
device and then remove it from the motherboard.
• When removing the cable, pull it straight out from the connector. Do not rock it side to side to
prevent an electrical short inside the cable connector.
LAN and ID Button LEDs
Link/Activity LED
Speed LED
LAN Port
ID button/LED:
10/100/1000 LAN LED:
State Description
Yellow On 1Gbps data rate
Green On 100Mbps data rate
Off 10Mbps data rate
State Description
Blue On Systemidenticationisactive
Off Systemidenticationisdisabled
10GbE LAN LED:
State Description
Yellow On 5Gbps, 2.5Gbps, 1Gps data rate
Green On 10Gbps data rate
Off 100Mbps data rate

- 18 -
Hardware Installation
1-7 Internal Connectors
Read the following guidelines before connecting external devices:
• First make sure your devices are compliant with the connectors you wish to connect.
• Before installing the devices, be sure to turn off the devices and your computer. Unplug the power
cord from the power outlet to prevent damage to the devices.
• After installing the device and before turning on the computer, make sure the device cable has
been securely attached to the connector on the motherboard.
1) ATX1 11) IPMB
2) P12V_AUX1 12) CN_NCSI
3) P12V_AUX2 13) F_AUDIO1
4) CPU0_FAN 14) LED_BMC
5) SYS_FAN1/2/3/4/5/6 15) BAT
6) PMBUS 16) CASE_OPEN
7) F_USB3 17) SW_RAID
8) FP_1
9) BP_1
10) SPI_TPM
CPU0
DIMM_P0_D0 DIMM_P0_C0 DIMM_P0_B0 DIMM_P0_A0 DIMM_P0_H0 DIMM_P0_E0 DIMM_P0_F0 DIMM_P0_G0
3
15
1
2
4
5
56
7
8
9
10
11
12
13
14
16
5
17

- 19 -
Hardware Installation
1/2/3) ATX1/P12V_AUX1/P12V_AUX2
(2x12 Main Power Connector and 2x4 12V Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the components
onthemotherboard.Beforeconnectingthepowerconnector,rstmakesurethepowersupplyisturnedoff
and all devices are properly installed. The power connector possesses a foolproof design. Connect the power
supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies
power to the CPU. If the 12V power connector is not connected, the computer will not start.
To meet expansion requirements, it is recommended that a power supply that can withstand high
power consumption be used (500W or greater). If a power supply is used that does not provide the
required power, the result can lead to an unstable or unbootable system.
ATX
P12V_AUX1/P12V_AUX2
8
5
4
1
PinNo. Denition
1 GND
2 GND
3 GND
4 GND
5 +12V
6 +12V
7 +12V
8 +12V
Pin No. Denition Pin No. Denition
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 Power Good 20 -5V
9 5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 3.3V 24 GND
113
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Hardware Installation
4/5) CPU0_FAN/SYS_FAN1/2/3/4/5/6 (Fan Headers)
The motherboard has one 4-pin CPU fan header (CPU_FAN), and six 4-pin (SYS_FAN) system fan headers.
Most fan headers possess a foolproof insertion design. When connecting a fan cable, be sure to connect
it in the correct orientation (the black connector wire is the ground wire). The motherboard supports CPU
fan speed control, which requires the use of a CPU fan with fan speed control design. For optimum heat
dissipation, it is recommended that a system fan be installed inside the chassis.
1
1
PinNo. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
•Be sure to connect fan cables to the fan headers to prevent your CPU and system from
overheating. Overheating may result in damage to the CPU or the system may hang.
• Thesefanheadersarenotconfigurationjumperblocks.Donotplaceajumpercaponthe
headers.
6) PMBus Connector
The Power Management Bus (PMBus) is a variant of the System Management Bus (SMBus) which is
targeted at digital management of power supplies.
5
1
PinNo. Denition
1 PMBus Clock
2 PMBus Data
3 PMBus Alert
4 GND
5 3.3V Sense