Extreme Networks ExtremeRouting SLX 9740 Manual

ExtremeRouting SLX 9740 Hardware
Installation Guide
9036696-01 Rev. AA
October 2020

Copyright © 2020 Extreme Networks, Inc. All rights reserved.
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Table of Contents
Preface.......................................................................................................................................................................................vi
Text Conventions......................................................................................................................................................... vi
Documentation and Training............................................................................................................................... viii
Getting Help.................................................................................................................................................................viii
Subscribe to Service Notifications........................................................................................................... viii
Providing Feedback....................................................................................................................................................ix
About this Document........................................................................................................ 10
Supported hardware and software....................................................................................................................10
SLX 9740 Router License Option..............................................................................................................10
What is new in this document.............................................................................................................................. 12
Device Overview.................................................................................................................13
ExtremeRouting SLX 9740 Product Introduction...................................................................................... 13
Hardware features...................................................................................................................................................... 13
Device management options................................................................................................................................ 15
Power Supplies................................................................................................................... 16
Precautions specific to power supplies........................................................................................................... 16
Power Supplies for Use with Your Device.......................................................................................................16
1600 W AC Power Supplies...........................................................................................................................17
1600 W DC Power Supply..............................................................................................................................17
Preparing for the Installation............................................................................................18
Preparing for the Installation.................................................................................................................................18
Safety precautions..................................................................................................................................................... 19
General precautions..........................................................................................................................................19
ESD precautions................................................................................................................................................20
Power precautions........................................................................................................................................... 20
Lifting precautions.............................................................................................................................................21
Laser precautions...............................................................................................................................................21
Shipping carton contents.......................................................................................................................................22
Operating Environment Requirements........................................................................................................... 22
Meeting Building and Electrical Codes...................................................................................................22
Setting up the Wiring Closet.......................................................................................................................23
Controlling the Temperature....................................................................................................................... 24
Controlling the Humidity Level...................................................................................................................24
Protecting Your System from ESD (Electrostatic Discharge)..................................................... 25
Rack Specifications and Recommendations................................................................................................ 25
Mechanical Recommendations for the Rack....................................................................................... 25
Grounding the Rack.........................................................................................................................................25
Providing Adequate Space for the Rack............................................................................................... 26
Securing the Rack.............................................................................................................................................26
Meeting Power Requirements..............................................................................................................................27
ExtremeRouting SLX 9740 Hardware Installation Guide iii

Power Supply Requirements....................................................................................................................... 27
Requirements for Power Cords.................................................................................................................. 27
UPS (Uninterruptible Power Supply) Requirements........................................................................28
Following Applicable Industry Standards......................................................................................................29
Installing Your Device....................................................................................................... 30
Installing Your Device..............................................................................................................................................30
Safety Considerations for Installing Switches...............................................................................................31
What You Will Need for the Installation...........................................................................................................31
Attaching the Switch to a Rack..........................................................................................................................32
Attaching the Device to a Four-Post Rack...........................................................................................32
Attaching the Device to a Two-Post Rack............................................................................................38
Installing Optional Components.........................................................................................................................43
Pluggable Transceiver Modules..................................................................................................................43
Optical Cables.................................................................................................................................................... 43
Breakout cables ................................................................................................................................................43
Installing Internal Power Supplies..................................................................................................................... 44
Installing a 1600 W Internal AC Power Supply...................................................................................44
Installing a 1600 W Internal DC Power Supply...................................................................................48
Powering up the Device..........................................................................................................................................52
Connecting Network Interface Cables.............................................................................................................52
Activating and Verifying the Switch............................................................................... 54
Establishing a serial connection ........................................................................................................................54
Configuring the Switch for Use...........................................................................................................................56
Transceivers and Cables................................................................................................... 57
Supported transceivers and cables...................................................................................................................57
Time and items required.........................................................................................................................................57
Precautions specific to transceivers and cables.........................................................................................58
Cleaning the fiber-optic connectors................................................................................................................ 58
Managing cables........................................................................................................................................................ 58
Installing a QSFP28 transceiver..........................................................................................................................59
Replacing a QSFP28 transceiver.........................................................................................................................61
Breakout cables.......................................................................................................................................................... 62
Verifying transceiver operation...........................................................................................................................62
Monitoring the Device...................................................................................................... 64
Monitoring Overview............................................................................................................................................... 64
LED activity interpretation................................................................................................................................... 64
LED indicators ............................................................................................................................................................65
1600 W AC Power Supply LEDs........................................................................................................................ 66
1600 W DC Power Supply LEDs........................................................................................................................ 66
Removing and Replacing Components .........................................................................68
Replacing Internal Power Supplies................................................................................................................... 68
Removing the Device from the Rack............................................................................................................... 68
Fan Assemblies.................................................................................................................. 72
Fan assemby overview............................................................................................................................................ 72
Precautions specific to fan assemblies............................................................................................................73
Identifying the airflow direction..........................................................................................................................73
Replacing Fan Modules...........................................................................................................................................74
Table of Contents
iv ExtremeRouting SLX 9740 Hardware Installation Guide

Changing Airflow Direction...................................................................................................................................75
ExtremeRouting SLX 9740 Technical Specifications................................................... 78
SLX 9740 Software Specifications....................................................................................................................78
Weights and Physical Dimensions.................................................................................................................... 80
Acoustic Specifications ......................................................................................................................................... 82
Power Options.............................................................................................................................................................82
Mean Time Between Failures (MTBF)..............................................................................................................83
CPU, Memory............................................................................................................................................................... 83
Standards...................................................................................................................................................................... 84
Environmental Data..................................................................................................................................................86
1600 W Power Supplies Technical Specifications..................................................................................... 86
Power Cord Requirements for AC-Powered Switches and AC Power Supplies.........................88
Safety and Regulatory Information................................................................................ 89
Safety and Regulatory Information.................................................................................................................. 89
Considerations Before Installing................................................................................................................89
General Safety Precautions......................................................................................................................... 90
Maintenance Safety......................................................................................................................................... 90
Cable Routing for LAN Systems.................................................................................................................91
Installing Power Supply Units and Connecting Power.....................................................................91
Selecting Power Supply Cords................................................................................................................... 92
Battery Notice.................................................................................................................................................... 93
Regulatory Statements.....................................................................................................94
CE statement............................................................................................................................................................... 94
China ROHS..................................................................................................................................................................94
BSMI statement (Taiwan).......................................................................................................................................95
Canadian requirements...........................................................................................................................................95
China CCC statement.............................................................................................................................................. 96
Australia (RCM).......................................................................................................................................................... 96
Federal Communications Commission (FCC) Notice.............................................................................. 97
Germany statement..................................................................................................................................................97
KCC statement (Republic of Korea)................................................................................................................. 97
Japan (VCCI Class A)...............................................................................................................................................97
Japan power cord .................................................................................................................................................... 98
Cautions and Danger Notices.......................................................................................... 99
Cautions......................................................................................................................................................................... 99
General cautions................................................................................................................................................99
Danger Notices......................................................................................................................................................... 103
General dangers...............................................................................................................................................103
Table of Contents
ExtremeRouting SLX 9740 Hardware Installation Guide v

Preface
This section describes the text conventions used in this document, where you can find additional
information, and how you can provide feedback to us.
Text Conventions
Unless otherwise noted, information in this document applies to all supported environments for the
products in question. Exceptions, like command keywords associated with a specific software version,
are identified in the text.
When a feature, function, or operation pertains to a specific hardware product, the product name is
used. When features, functions, and operations are the same across an entire product family, such as
ExtremeSwitching switches or SLX routers, the product is referred to as the switch or the router.
Table 1: Notes and warnings
Icon Notice type Alerts you to...
Tip Helpful tips and notices for using the product.
Note Useful information or instructions.
Important Important features or instructions.
vi ExtremeRouting SLX 9740 Hardware Installation Guide

Table 1: Notes and warnings (continued)
Icon Notice type Alerts you to...
Caution Risk of personal injury, system damage, or loss of data.
Warning Risk of severe personal injury.
Table 2: Text
Convention Description
screen displays This typeface indicates command syntax, or represents information as
it appears on the screen.
The words enter and type When you see the word enter in this guide, you must type something,
and then press the Return or Enter key. Do not press the Return or
Enter key when an instruction simply says type.
Key names Key names are written in boldface, for example Ctrl or Esc. If you must
press two or more keys simultaneously, the key names are linked with a
plus sign (+). Example: Press Ctrl+Alt+Del
Words in italicized type Italics emphasize a point or denote new terms at the place where they
are defined in the text. Italics are also used when referring to
publication titles.
New information. In a PDF, this is searchable text.
Table 3: Command syntax
Convention Description
bold text Bold text indicates command names, keywords, and command options.
italic text Italic text indicates variable content.
[ ] Syntax components displayed within square brackets are optional.
Default responses to system prompts are enclosed in square brackets.
{ x | y | z } A choice of required parameters is enclosed in curly brackets separated
by vertical bars. You must select one of the options.
x | yA vertical bar separates mutually exclusive elements.
< > Nonprinting characters, such as passwords, are enclosed in angle
brackets.
... Repeat the previous element, for example, member[member...].
\ In command examples, the backslash indicates a “soft” line break.
When a backslash separates two lines of a command input, enter the
entire command at the prompt without the backslash.
Preface Text Conventions
ExtremeRouting SLX 9740 Hardware Installation Guide vii

Documentation and Training
Find Extreme Networks product information at the following locations:
Current Product Documentation
Release Notes
Hardware and software compatibility for Extreme Networks products
Extreme Optics Compatibility
Other resources such as white papers, data sheets, and case studies
Extreme Networks oers product training courses, both online and in person, as well as specialized
certifications. For details, visit www.extremenetworks.com/education/.
Getting Help
If you require assistance, contact Extreme Networks using one of the following methods:
Extreme Portal
Search the GTAC (Global Technical Assistance Center) knowledge base; manage support cases and
service contracts; download software; and obtain product licensing, training, and certifications.
The Hub
A forum for Extreme Networks customers to connect with one another, answer questions, and share
ideas and feedback. This community is monitored by Extreme Networks employees, but is not
intended to replace specific guidance from GTAC.
Call GTAC
For immediate support: [phone] (toll-free in U.S. and Canada) or 1 [phone]. For the
support phone number in your country, visit: www.extremenetworks.com/support/contact
Before contacting Extreme Networks for technical support, have the following information ready:
•Your Extreme Networks service contract number, or serial numbers for all involved Extreme
Networks products
•A description of the failure
•A description of any actions already taken to resolve the problem
•A description of your network environment (such as layout, cable type, other relevant environmental
information)
•Network load at the time of trouble (if known)
•The device history (for example, if you have returned the device before, or if this is a recurring
problem)
•Any related RMA (Return Material Authorization) numbers
Subscribe to Service Notifications
You can subscribe to email notifications for product and software release announcements, Vulnerability
Notices, and Service Notifications.
1. Go to www.extremenetworks.com/support/service-notification-form.
2. Complete the form (all fields are required).
Documentation and Training Preface
viii ExtremeRouting SLX 9740 Hardware Installation Guide

3. Select the products for which you would like to receive notifications.
Note
You can modify your product selections or unsubscribe at any time.
4. Select Submit.
Providing Feedback
The Information Development team at Extreme Networks has made every eort to ensure the accuracy
and completeness of this document. We are always striving to improve our documentation and help
you work better, so we want to hear from you. We welcome all feedback, but we especially want to
know about:
•Content errors, or confusing or conflicting information.
•Improvements that would help you find relevant information in the document.
•Broken links or usability issues.
If you would like to provide feedback, you can do so in three ways:
•In a web browser, select the feedback icon and complete the online feedback form.
•Access the feedback form at https://www.extremenetworks.com/documentation-feedback/.
•Email us at [e-mail].
Provide the publication title, part number, and as much detail as possible, including the topic heading
and page number if applicable, as well as your suggestions for improvement.
Preface Providing Feedback
ExtremeRouting SLX 9740 Hardware Installation Guide ix

About this Document
Supported hardware and software on page 10
What is new in this document on page 12
Supported hardware and software
The following table describes the ExtremeRouting SLX 9740 models:
Table 4: SLX 9740 Switch Router Models
Part number Description Introduced OS Currently
supported
SLX9740-40C, 9740-40C Extreme SLX9740-40C switch router. Base
unit with 40x100GE/40GE capable QSFP28
ports, 2 unpopulated power supply slots, 6
unpopulated fan slots
SLX-OS 20.2.1 Yes
SLX9740-40C-AC-F Extreme SLX9740-40C-AC-F switch router.
Base with 40x100GE/40GE capable QSFP28
ports, 2 AC power supplies, 6 fan modules.
SLX-OS 20.2.1 Yes
SLX9740-80C, 9740-80C Extreme SLX9740-80C switch router. Base
unit with 80x100GE/40GE capable QSFP28
ports, 4 unpopulated power supply slots, 4
unpopulated fan slots.
SLX-OS 20.2.1 Yes
SLX9740-80C-AC-F Extreme SLX9740-80C-AC-F switch router.
Base with 80x100GE/40GE capable QSFP28
ports, 4 AC power supplies, 4 fan modules.
SLX-OS 20.2.1 Yes
The following table lists the SLX 9740 supported power supplies FRU:
Table 5: Supported SLX 9740 Power Supplies
Part number Description Introduced OS Currently
supported
XN-ACPWR-1600W-F SLX 9740 Fixed AC 1600W Power Supply Front
to Back. Power cords not included.
SLX-OS 20.2.1 Yes
XN-ACPWR-1600W-R SLX 9740 Fixed AC 1600W Power Supply Back
to Front. Power cords not included.
SLX-OS 20.2.1 Yes
XN-DCPWR-1600W-F SLX Fixed DC 1600W Power Supply Front to
Back airflow. Power cords not included.
SLX-OS 20.2.1 Yes
10 ExtremeRouting SLX 9740 Hardware Installation Guide

The following table lists the SLX 9740 power specifications:
Table 6: Supported SLX 9740 Power Specifications
Part number Description Introduced OS Currently
supported
9740-40C, SLX9740-40C AC Input: 100-120VAC, 50/60Hz, 7A Max (for
PSU FSG059 for each PS)
SLX-OS 20.2.1 Yes
AC Input: 200-240VAC, 50/60Hz, 4A Max (for
PSU FSG059 and FSE023) or +/- 48vdc, 15A Max
(for PSU FSK010) for each PSU
9740-80C, SLX9740-80C AC Input: 100-120VAC, 50/60Hz, 7A Max (for
PSU FSG059 for each PSU)
SLX-OS 20.2.1 Yes
AC Input: 200-240VAC, 50/60Hz, 4A Max (for
PSU FSG059 and FSE023) or +/- 48vdc, 15A Max
(for PSU FSK010) for each PSU, minimum *2
The following table lists the SLX 9740 switch routers supported fan assemblies:
Table 7: Supported SLX 9740 Fan Assemblies for all models
Part number Description Introduced OS Currently
supported
XN-FAN-003-F SLX 9740 FAN Front to Back airflow for
SLX9740-40C
SLX-OS 20.2.1 Yes
XN-FAN-003-R SLX 9740 FAN Back to Front airflow for
SLX9740-40C
SLX-OS 20.2.1 Yes
XN-FAN-004-F SLX 9740 FAN Front to Back airflow for
SLX9740-80C
SLX-OS 20.2.1 Yes
XN-FAN-004-R SLX 9740 FAN Back to Front airflow for
SLX9740-80C
SLX-OS 20.2.1 Yes
The following table lists the SLX 9740 switch routers supported rack mount kit:
Table 8: Supported SLX 9740 Router Rack Mount Kit
Part number Description
XN-2P-RKMT299 2 post Rail kit for SLX9740-40C
XN-2P-RKMT300 2 Post Rail Kit for SLX9740-80C
XN-4P-RKMT301 4 Post Rail Kit for SLX9740-80C
XN-4P-RKMT302 4 Post Rail Kit for SLX9740-40C
About this Document Supported hardware and software
ExtremeRouting SLX 9740 Hardware Installation Guide 11

SLX 9740 Router License Option
Table 9: SLX 9740 Router License Option
Part number Description
SLX9740-ADV-LIC-P Advanced Feature License for MPLS, CE2.0 OptiScale™ Internet Routing (for Extreme
SLX 9740-40C and SLX 9740-80C)
For information about licensing option for SLX-OS support for SLX 9740 switch routers, reference
Extreme SLX-OS Software Licensing Guide.
What is new in this document
This is a new document.
SLX 9740 Router License Option About this Document
12 ExtremeRouting SLX 9740 Hardware Installation Guide

Device Overview
ExtremeRouting SLX 9740 Product Introduction on page 13
Hardware features on page 13
Device management options on page 15
ExtremeRouting SLX 9740 Product Introduction
The SLX 9740 are high density, fixed form factor switch routers with 80 x 100 GbE or 40 x 100 GbE
ports to deliver the scale and performance needed to address the explosive growth in network
bandwidth, devices and services.
This platform provides carrier-class advanced features that leverage proven Extreme Networks routing,
MPLS, Carrier Ethernet, and VXLAN overlay technology, deployed in the most demanding service
providers, internet exchange points (IXPs) and large enterprise data centers.
Hardware features
The SLX 9740 switch routers run on the SLX-OS operating system.
The SLX 9740 switch routers comes in the following base models:
•SLX9740-40C, 9740-40C:
◦40 100GE/40GE QSFP28 ports
◦RJ45 out-of-band 10/100/1000BASE-T management Ethernet port.
◦RJ45 serial console port used to connect a terminal and perform local management.
◦USB port for access to external storage.
◦Two power supply bays for 1600 W AC or DC power supplies
◦Six bays for replaceable fan modules.
•SLX9740-80C, 9740-80C:
◦80 100GE/40GE QSFP28 ports
◦RJ45 out-of-band 10/100/1000BASE-T management Ethernet port.
◦RJ45 serial console port used to connect a terminal and perform local management.
◦USB port for access to external storage.
◦Four power supply bays for 1600 W AC or DC power supplies
◦Four bays for replaceable fan modules.
ExtremeRouting SLX 9740 Hardware Installation Guide 13

The SLX9740-40C-AC-F switch router includes:
•40 100GE/40GE QSFP28 ports
•RJ45 out-of-band 10/100/1000BASE-T management Ethernet port.
•RJ45 serial console port used to connect a terminal and perform local management.
•USB port for access to external storage.
•Two 1600 W AC power supplies
•Six replaceble fan modules
The SLX9740-80C-AC-F switch router includes:
•80 100GE/40GE QSFP28 ports
•RJ45 out-of-band 10/100/1000BASE-T management Ethernet port.
•RJ45 serial console port used to connect a terminal and perform local management.
•USB port for access to external storage.
•Four 1600 W AC power supplies
•Four replaceble fan modules
Figure 1: SLX9740-40C Front Panel
1 = LEDs 4 = USB port
2 = 100GE/40GE QSFP28 ports 5 = Console port
3 = Management port
Figure 2: SLX9740-40C Rear Panel
1 = Power supplies 2 = Fan modules
Hardware features Device Overview
14 ExtremeRouting SLX 9740 Hardware Installation Guide

Figure 3: SLX9740-80C Front Panel
1 = LEDs 4 = USB port
2 = 100GE/40GE QSFP28 ports 5 = Console port
3 = Management port
Figure 4: SLX9740-80C Rear Panel
1 = Power supplies 2 = Fan modules
For more device details, refer to ExtremeRouting SLX 9740 Technical Specifications on page 78.
Device management options
You can use the management functions built into the device to monitor the port status, physical status,
and other information to help you analyze device performance and to accelerate system debugging.
The device automatically performs a power-on self-test (POST) each time it is turned on.
You can manage the device using any of the management options listed in the following table.
Table 10: Management options for the device
Management tool Out-of-band
support
In-band
support
Reference documents
Command line interface
(CLI)
Ethernet or serial
connection
N/A Extreme SLX-OS Management
Configuration Guide
REST or NETCONF/YANG
APIs.
Ethernet connection Yes Extreme SLX-OS Management
Configuration Guide
Standard SNMP applications Ethernet or serial
connection
N/A Extreme SLX-OS Management
Configuration Guide
Device Overview Device management options
ExtremeRouting SLX 9740 Hardware Installation Guide 15

Power Supplies
Precautions specific to power supplies on page 16
Power Supplies for Use with Your Device on page 16
Precautions specific to power supplies
Warning
Make sure that the power source circuits are properly grounded, then use the power cord
supplied with the device to connect it to the power source.
Warning
If the installation requires a dierent power cord than the one supplied with the device, make
sure you use a power cord displaying the mark of the safety agency that defines the
regulations for power cords in your country. The mark is your assurance that the power cord
can be used safely with the device.
Caution
Disassembling any part of the power supply and fan assembly voids the warranty and
regulatory certifications. There are no user-serviceable parts inside the power supply and fan
assembly.
Caution
Ensure that the airflow direction of the power supply unit matches that of the installed fan
tray. The power supplies and fan trays are clearly labeled with either a green arrow with an
"E", or an orange arrow with an "I."
Caution
If you do not install a module or a power supply in a slot, you must keep the slot filler panel in
place. If you run the chassis with an uncovered slot, the system will overheat.
Power Supplies for Use with Your Device
Each SLX 9740 switch router runs with two or four replaceable internal power supply units that provide
all of the power needed for the device to operate. You can remove one power supply without
interrupting the device's operation.
For more information, see the following topics.
•1600 W AC Power Supplies on page 17
16 ExtremeRouting SLX 9740 Hardware Installation Guide

•1600 W DC Power Supply on page 17
1600 W AC Power Supplies
Two 1600 W AC power supply options, with front-to-back or back-to-front airflow, are provided for the
SLX 9740 switch routers.
•1600W AC power supply - front-to-back airflow (part no. XN-ACPWR-1600W-F)
•1600W AC power supply - back-to-front airflow (part no. XN-ACPWR-1600W-R)
Note
AC power input cords are not provided with AC power supplies. You can order an appropriate
cord from Extreme Networks or from your local supplier. The power cord must meet the
requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power
Supplies on page 88
For information on installing or replacing an AC power supply, see Installing a 1600 W Internal AC Power
Supply on page 44.
LEDs on the 1600 W AC power supply provide information on the unit's operational status. See 1600 W
AC Power Supply LEDs on page 66 for details.
1600 W DC Power Supply
One 1600 W DC power supply option, with front-to-back, is provided for the SLX 9740 switch routers.
•1600W DC power supply - front-to-back airflow (part no. XN-DCPWR-1600W-F)
For information on installing or replacing a DC power supply, see Installing a 1600 W Internal DC Power
Supply on page 48.
LEDs on the 1600 W DC power supply provide information on the unit's operational status. See 1600 W
DC Power Supply LEDs on page 66 for details.
Power Supplies 1600 W AC Power Supplies
ExtremeRouting SLX 9740 Hardware Installation Guide 17

Preparing for the Installation
Preparing for the Installation on page 18
Safety precautions on page 19
Shipping carton contents on page 22
Operating Environment Requirements on page 22
Rack Specifications and Recommendations on page 25
Meeting Power Requirements on page 27
Following Applicable Industry Standards on page 29
Preparing for the Installation
Before you install your Extreme Networks equipment, careful planning can help ensure that it is used
eectively and help prepare you for future growth.
Only qualified service personnel should install, maintain, or remove a device, chassis, or its components.
Qualified service personnel have had appropriate technical training and experience that is necessary to
be aware of the hazards to which they are exposed when performing a task and of measures to
minimize the danger to themselves or other people.
Note
Before installing or removing any components of the system, and before carrying out any
maintenance procedures, read the safety information in Safety and Regulatory Information on
page 89.
The information in this chapter is intended for the system administrator, network equipment technician,
network manager, or facilities manager responsible for installing and managing the network hardware.
The chapter assumes a working knowledge of local area network (LAN) operations, and a familiarity
with communications protocols that are used on interconnected LANs.
This chapter covers the following aspects of site preparation:
1. Operating Environment Requirements on page 22
Verify that your site meets all environmental and safety requirements.
2. Rack Specifications and Recommendations on page 25
Ensure that mounting racks are safe and appropriate for the equipment.
3. Managing cables on page 58
Understand the dierent cabling options and select the ones that best address your needs.
18 ExtremeRouting SLX 9740 Hardware Installation Guide

4. Meeting Power Requirements on page 27
Ensure that power supplies are safe and appropriate for the equipment.
For details about the equipment's power requirements, see the Power Supplies for Use with Your
Device on page 16.
5. Following Applicable Industry Standards on page 29
Understand the applicable standards and ensure that they are being followed.
Safety precautions
When using this product, observe all danger, caution, and attention notices in this manual. The safety
notices are accompanied by symbols that represent the severity of the safety condition.
Refer to Cautions and Danger Notices at the end of this guide for translations of safety notices for this
product.
General precautions
Warning
The procedures in this manual are for qualified service personnel.
Warning
Before beginning the installation, see the precautions in “Power precautions.”
Warning
Be careful not to accidently insert your fingers into the fan tray while removing it from the
chassis. The fan may still be spinning at a high speed.
Caution
Changes or modifications made to this device that are not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
Caution
Disassembling any part of the power supply and fan assembly voids the warranty and
regulatory certifications. There are no user-serviceable parts inside the power supply and fan
assembly.
Caution
Make sure the airflow around the front, and back of the device is not restricted.
Caution
Ensure that the airflow direction of the power supply unit matches that of the installed fan
tray. The power supplies and fan trays are clearly labeled with either a green arrow with an
"E", or an orange arrow with an "I."
Preparing for the Installation Safety precautions
ExtremeRouting SLX 9740 Hardware Installation Guide 19

Caution
To protect the serial port from damage, keep the cover on the port when not in use.
Caution
Never leave tools inside the chassis.
Caution
If you do not install a module or a power supply in a slot, you must keep the slot filler panel in
place. If you run the chassis with an uncovered slot, the system will overheat.
Caution
Use the screws specified in the procedure. Using longer screws can damage the device.
Caution
Do not install the device in an environment where the operating ambient temperature might
exceed 50°C (122°F).
Warning
Batteries used for RTC/NVRAM backup are not located in operator-access areas. There is a
risk of explosion if a battery is replace by an incorrect type. Dispose of used components with
batteries according to local ordinance and regulations.
ESD precautions
Warning
For safety reasons, the ESD wrist strap should contain a series 1 megaohm resistor.
Caution
Static electricity can damage the chassis and other electronic devices. To avoid damage, keep
static-sensitive devices in their static-protective packages until you are ready to install them.
Caution
Before plugging a cable into any port, be sure to discharge the voltage stored on the cable by
touching the electrical contacts to ground surface.
Power precautions
Warning
If the installation requires a dierent power cord than the one supplied with the device, make
sure you use a power cord displaying the mark of the safety agency that defines the
regulations for power cords in your country. The mark is your assurance that the power cord
can be used safely with the device.
Warning
Disconnect the power cord from all power sources to completely remove power from the
device.
ESD precautions Preparing for the Installation
20 ExtremeRouting SLX 9740 Hardware Installation Guide