H3C MSR 2600 Series User manual

i
Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Safety symbols········································································································································1-1
General safety recommendations···········································································································1-1
Electricity safety······································································································································1-2
Examining the installation site·························································································································1-2
Temperature and humidity······················································································································1-2
Cleanliness··············································································································································1-2
Cooling system········································································································································1-3
ESD prevention·······································································································································1-3
EMI prevention········································································································································1-4
Lightning protection·································································································································1-4
Rack requirements··································································································································1-5
Installation tools and accessories ···················································································································1-5
Pre-installation checklist··································································································································1-6
2 Installing the router··················································································2-1
Installation prerequisites ·································································································································2-1
Installation flowchart········································································································································2-1
Installing the router··········································································································································2-2
Mounting the router on a workbench·······································································································2-3
Mounting the router in a rack ··················································································································2-3
Mounting the router on a wall··················································································································2-6
Grounding the router·······························································································································2-7
Installing interface modules···················································································································2-11
Installing a 3G SIM card································································································································2-13
Installing a 3G antenna·································································································································2-15
Connecting a 3G/4G antenna extension cable to a 3G router······································································2-16
Installing a 4G SIM card································································································································2-17
Installing a 4G antenna·································································································································2-19
Connecting a 3G/4G antenna extension cable to a 4G router······································································2-20
Connecting interface cables··················································································································2-21
Logging in from the console port and setting terminal parameters·······················································2-22
Connecting the AC power cord·············································································································2-25
Verifying the installation························································································································2-27
Starting the router ·········································································································································2-28
3 Replacement procedure···········································································3-1
Replacing an interface module ·······················································································································3-1
Replacing a SIC······································································································································3-1
Replacing a DSIC····································································································································3-2
Replacing a transceiver module······················································································································3-3
4 Troubleshooting·······················································································4-1
Power supply failure········································································································································4-1
Symptom·················································································································································4-1
Solution···················································································································································4-1
Fan tray failure················································································································································4-1
Symptom·················································································································································4-1
Solution···················································································································································4-1
No display on the configuration terminal·········································································································4-2
Symptom·················································································································································4-2
Solution···················································································································································4-2
Garbled display on the configuration terminal·································································································4-2
Symptom·················································································································································4-2
Solution···················································································································································4-2
No response from the serial console port ·······································································································4-2

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Symptom·················································································································································4-2
Solution···················································································································································4-2
Interface module failure···································································································································4-3
Symptom·················································································································································4-3
Solution···················································································································································4-3
3G/4G SIM card and 3G/4G antenna failures·································································································4-3
Symptom·················································································································································4-3
Solution···················································································································································4-3
Restoring the factory settings ·························································································································4-3
Scenario 1···············································································································································4-3
Scenario 2···············································································································································4-4
Scenario 3···············································································································································4-4
Reset button usage guidelines················································································································4-4

1-1
1 Preparing for installation
This document is applicable to the router models in Table1-1.
Table1-1 H3C MSR2600 router series models
Model (marked on the front panel)
Product code
H3C MSR 26-00
RT-MSR2600-5-GU-CNDE
RT-MSR2600-5-GT-CNDE
RT-MSR2600-5-LM-CNDE
RT-MSR2600-10
RT-MSR2600-17
H3C MSR 26-30 RT-MSR2630
H3C MSR2600 Series
RT-MSR2600-6-X1
RT-MSR2600-10-X1
RT-MSR2600-15-X1
RT-MSR2600-15-X1-T
RT-MSR2630E-X1
RT-MSR2630-XS
RT-MSR2660-XS
RT-MSR2680-XS
Safety recommendations
Safety symbols
When reading this document, pay attention to the following symbols:
WARNING means an alert that calls attention to important information that if not understood or
followed can result in personal injury.
CAUTION means an alert that calls attention to important information that if not understood or
followed can result in data loss, data corruption, or damage to hardware or software.
General safety recommendations
•
Keep the router and installation tools away from walk areas.
•
Place the router in a dry and flat location and make sure anti-slip measures are in place.
•
Remove all external interface cables and power cords before moving the router.

1-2
Electricity safety
•
Locate the power-off switch in the equipment room before installation. Shut off the power
immediately if an accident occurs. Disconnect the power cord from the router if necessary.
•
Make sure the router is reliably grounded.
•
Connect the interface cables correctly.
•
Use an uninterrupted power supply (UPS).
•
Always make sure the power has been disconnected during the installation or replacement
procedure.
Examining the installation site
The router can only be used indoors. To ensure correct operation and long service life of your
router, make sure the installation site meets the following requirements.
Temperature and humidity
Maintain the temperature and humidity in the equipment room as described in Table1-2.
•
High temperature can accelerate the aging of insulation materials and significantly lower the
reliability and lifespan of the router.
•
Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical
property change of materials, and metal corrosion.
•
Lasting low relative humidity can cause washer contraction and ESD and bring issues
including loose screws and circuit failure.
Table1-2 Temperature and humidity requirements
Router model Temperature Humidity
MSR2600-5-GU-CNDE,
MSR2600-5-GT-CNDE,
MSR2600-5-LM-CNDE,
MSR2600-10, MSR2600-17,
MSR2630
•Operating: 0°C to 45°C
(32°F to 113°F)
•Storage: –40°C to +70°C (–
40°F to +158°F)
5% to 90%, noncondensing
MSR2600-6-X1, MSR2600-10-
X1, MSR2600-15-X1, MSR2600-
15-X1-T, MSR2630E-X1,
MSR2630-XS, MSR2660-XS,
MSR2680-XS
•Operating: 0°C to 45°C
(32°F to 113°F)
•Storage: –40°C to +70°C (–
40°F to +158°F)
5% RH to 95% RH,
noncondensing
Cleanliness
Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of
metal components and contact points, especially when indoor relative humidity is low. In the worst
case, electrostatic adsorption can cause communication failure.
Table1-3 Dust concentration limit in the equipment room
Substance
Concentration limit (particles/m
3
)
Dust particles ≤ 3 x 104
(No visible dust on the tabletop in three days)

1-3
Substance
Concentration limit (particles/m
3
)
NOTE:
Dust diameter ≥ 5 µm
The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table1-4.
Table1-4 Harmful gas limits in an equipment room
Gas
Maximum concentration (mg/m
3
)
SO20.2
H2S 0.006
NH30.05
NO20.04
Cl20.01
Cooling system
Only the MSR2660-XS router uses passive cooling. The other routers use left-to-right airflow for
heat dissipation, as shown in Figure1-1.
For adequate cooling of the router, make sure the following requirements are met:
•
A minimum clearance of 10 cm (3.94 in) is reserved around the air inlet and outlet vents.
•
The installation site has a good ventilation system.
Figure1-1 Airflow through the chassis
ESD prevention
Preventing electrostatic discharge
To prevent electrostatic discharge (ESD), follow these guidelines:
•
Make sure the router and the floor are reliably grounded.

1-4
•
Take dust-proof measures for the equipment room.
•
Maintain the humidity and temperature levels in the acceptable range.
•
Always wear an ESD wrist strap and an ESD garment when touching a circuit board or
transceiver module.
•
Place the removed interface module on an antistatic workbench with the circuit board upward,
or put it in an antistatic bag.
•
Touch only the edges instead of electronic components on the circuit board when you observe
or move a removed interface module.
Attaching an ESD wrist strap
CAUTIO
N:
Use a multimeter to c
heck the resistance of the ESD wrist strap for safety. The resistance reading
should be in the range of 1 to 10 megohm (Mohm) between a human body and the ground.
No ESD wrist strap is provided with the router. Prepare one yourself.
To attach an ESD wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to maintain good contact with the skin.
3. Secure the wrist strap lock and the alligator clip lock together.
4. Attach the alligator clip to the rack or workbench where the router is installed.
EMI prevention
All electromagnetic interference (EMI) sources, from outside or inside of the router and application
system, adversely affect the router in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
Keep the router far away from radio transmitting stations, radar stations, and high-frequency
devices.
•
Use electromagnetic shielding, for example, shielded interface cables, when necessary.
•
To prevent signal ports from getting damaged by overvoltage or overcurrent caused by
lightning strikes, route interface cables only indoors.
Lightning protection
To enhance lightning protection for the router, follow these guidelines:
•
Make sure the router is reliably grounded.
•
Make sure the AC power outlet is reliably grounded.
•
Install a lightning protector at the power input end.
•
Install a lighting protector at the input end of signal cables routed from outdoors, for example,
E1/T1 cable.

1-5
Rack requirements
To install the router in a rack, make sure the rack meets the following requirements:
•
The rack has a good ventilation system.
•
The rack is sturdy and can support the router and its accessories.
•
The rack has a size that can accommodate the router.
•
Enough clearances are reserved at the two sides of the router for heat dissipation.
•
A minimum of 0.8 m (2.62 ft) of clearance is reserved between the rack and walls or other
devices for heat dissipation and maintenance.
•
The headroom in the equipment room is not less than 3 m (9.84 ft).
Installation tools and accessories
Figure1-2 Installation tools
Flathead
screwdriver Phillips screwdriver Needle-nose pliers Wire stripper
ESD wrist strap Diagonal pliers Heat gun
Network cable
tester
Multimeter Marker

1-6
Figure1-3 Installation accessories
Pre-installation checklist
Table1-5 Pre-installation checklist
Item
Requirements
Installation
site
Ventilation
•A minimum clearance of 100 mm (3.94 in) is reserved around the
air inlet and outlet vents.
•The installation site has a good ventilation system.
Temperature •Operating temperature: 0°C to 45°C (32°F to 113°F)
•Storage temperature: –40°C to +70°C (–40°F to +158°F)
Humidity
•MSR2600-6-X1, MSR2600-10-X1, MSR2600-15-X1, MSR2600-
15-X1-T, MSR2630E-X1, MSR2630-XS, MSR2660-XS, and
MSR2680-XS: 5% RH to 95% RH, noncondensing.
•MSR2630, MSR2600-5-GU-CNDE, MSR2600-5-GT-CNDE,
MSR2600-5-LM-CNDE, MSR2600-10, and MSR2600-17: 5% RH
to 90% RH, noncondensing.
Cleanliness Dust concentration ≤ 3 × 104 particles/m3 (no visible dust on the
tabletop over three days)
ESD prevention •The router and floor are reliably grounded.
Cage nut
(user
supplied)
MSR2600-6-X1/MSR2600-10-
X1/MSR2600-15-X1/MSR2600-
15-X1-T/MSR2630/MSR2630E-
X1/MSR2630-XS/MSR2660-
XS/MSR2680-XS/MSR2600-
10/MSR2600-17 grounding
cable
M6 screw (user
supplied for the
MSR2630E-
X1/MSR2660-XS)
MSR2600-6-X1/MSR2600-10-
X1/MSR2600-15-X1/MSR2600-15-X1-
T/MSR2630/MSR2630E-X1/MSR2630-
XS/MSR2680-XS/MSR2600-10/MSR2600-
17 mounting brackets
M4 screw
Rubber feet
MSR2600-6-X1/MSR2600-
15-X1/MSR2600-15-X1-
T/MSR2630-XS/MSR2660-
XS/MSR2680-
XS/MSR2630E-X1
releasable cable tie
Power cord
Console cable MSR2600-
10/MSR2600-
17/MSR2600-10-X1
power cord retainer clip
Wall anchor and
screw (user
supplied)
MSR2600-5-GU-
CNDE/MSR2600-
5-GT-
CNDE/MSR2600-
5-LM-CNDE
grounding terminal
3G antenna (provided
with the MSR2600-5-GU-
CNDE/MSR2600-5-GT-
CNDE)
3G/4G antenna
extension cable
(user supplied)
3G/4G antenna bracket
(user supplied)
4G antenna
(provided with the
MSR2600-5-LM-
CNDE)
MSR2660-XS
mounting
brackets

1-7
Item
Requirements
•Dust-proof measures are taken in the equipment room.
•Humidity and temperature are maintained at acceptable levels.
•An ESD wrist strap and ESD garment are available.
•An anti-static workbench and anti-static bags are available.
EMI prevention
•A single-phase three-wire power receptacle with protection earth
(PE) is available for filtering interference from the power grid.
•The router is far away from radio transmitting stations, radar
stations, and high-frequency devices.
•Electromagnetic shielding, for example, shielded interface
cables, is used as required.
Lightning
protection
•The router is reliably grounded.
•The AC power receptacle is reliably grounded.
•(Optional.) Port lightning protectors are available.
•(Optional.) Power lightning protectors are available.
•(Optional.) Signal cable lightning protectors are available.
Electricity safety
•A UPS is available.
•The power-off switch in the equipment room is identified and
accessible so that the power can be immediately shut off when
an accident occurs.
Workbench •The workbench is stable.
•The workbench is reliably grounded.
Rack
•The rack has a good ventilation system.
•The rack is sturdy and can support the router and its
accessories.
•The rack has a size that can accommodate the router.
•A minimum of 0.8 m (2.62 ft) of clearance is reserved between
the rack and walls or other devices.
Safety
precautions The router is far away from any sources of heat or moisture.
Installation
tools and
accessories
•Installation accessories supplied with the router are ready.
•User-supplied tools are ready.
Reference •Documents shipped with the router are available.
•Online documents are available.

2-1
2 Installing the router
WARNING
!
To avoid injury, do not touch bare wires, terminals, or parts with high-voltage hazard signs.
IMPORTANT:
•
The barcode on the router chassis contains product information that must be provided to local
sales agent when you return a faulty router for repair.
•
Keep the tamper-proof seal on a mounting screw on the chassis cover intact, and if y
ou want to
open the chassis, contact H3C for permission. Otherwise, H3C shall not be liable for any
consequence.
Installation prerequisites
•
You have read "Preparing for installation" carefully.
•
All requirements in "Preparing for installation" are met.
Installation flowchart
The following installation options are available for the router:
•
Workbench mounting.
•
Rack mounting.
•
Wall mounting.
Determine the installation method according to the installation environment. Follow the installation
flowchart shown in Figure2-1 to install the router.

2-2
Figure2-1 Installation flowchart
Installing the router
The installation procedure is similar for the MSR2600 routers. The following installation procedure
uses the MSR2600-10-X1 router as an example.
Yes
No
Start
Ground the router
Install interface modules
Connect interface cables
Connect the router to a
configuration terminal
Connect the power cord
Verify the installation
Power on the router Troubleshoot the router
Power off the routerOperating correctly?
End
Mount the router on a
workbench Mount the router in a rack
Determine the
installation position
Workbench-mounting Rack-mounting
Mount the router on a
wall
Wall-mounting
Install SIM cards

2-3
Mounting the router on a workbench
IMPORTANT:
•
Make sure the workbench is clean, stable, and reliably grounded.
•
Maintain a minimum clearance of 100 mm (3.94 in) around the router for heat dissipation.
•Do not place heavy objects on the router.
To mount the router on a workbench:
1. Place the router upside down on the workbench and attach the rubber feet to the four round
holes in the chassis bottom.
2. Place the router upside up on the workbench. Make sure the rubber feet stand securely on
the workbench.
Figure2-2 Mounting the router on a workbench
Mounting the router in a rack
The MSR2600-5-GU-CNDE, MSR2600-5-GT-CNDE, and MSR2600-5-LM-CNDE routers cannot
be installed in a rack.
Router dimensions and rack requirements
The MSR2660-XS router is small and does not have rack requirements. For information about the
dimensions of the MSR2660-XS router, see H3C MSR 2600 Router Series Hardware Information
and Specifications.
Table2-1 Router dimensions and rack requirements
Router model
Chassis dimensions
Rack requirements
MSR2600-6-X1
MSR2600-15-X1
MSR2600-15-X1-
T
MSR2630-XS
•Height—44.2 mm (1.74 in)/1 RU
•Width—360 mm (14.17 in)
•Depth—420 mm (16.54 in)
300 mm (11.81 in) for the
chassis
60 mm (2.36 in) for connecting
the AC power cord at the front
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack posts and the
front door
•A minimum of 360 mm (14.17 in)
between the front rack posts and the
rear door

2-4
Router model
Chassis dimensions
Rack requirements

60 mm (2.36 in) for connecting
the E1 cable at the rear
MSR2600-10-X1
•Height—44.2 mm (1.74 in)/1 RU
•Width—360 mm (14.17 in)
•Depth—423.5 mm (16.67 in)
303.5 mm (11.95 in) for the
chassis
60 mm (2.36 in) for connecting
the AC power cord at the front
60 mm (2.36 in) for connecting
the E1 cable at the rear
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack posts and the
front door
•A minimum of 360 mm (14.17 in)
between the front rack posts and the
rear door
MSR2630E-X1
MSR2680-XS
•Height—44.2 mm (1.74 in)/1 RU
•Width—360 mm (14.17 in)
•Depth—420 mm (16.54 in)
300 mm (11.81 in) for the
chassis
60 mm (2.36 in) for connecting
the AC power cord at the front
60 mm (2.36 in) for connecting
the E1 cable at the rear
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack post and the
front door
•A minimum of 530 mm (20.87 in)
between the front rack post and the
rear door
MSR2630
•Height—44.2 mm (1.74 in)/1 RU
•Width—360 mm (14.17 in)
•Total depth—423.5 mm (16.67 in)
303.5 mm (11.95 in) for the
chassis
60 mm (2.36 in) for connecting
the AC/DC power cord at the
front
60 mm (2.36 in) for connecting
the E1 cable at the rear
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack posts and the
front door
•A minimum of 360 mm (14.17 in)
between the front rack posts and the
rear door
MSR2600-10
•Height—44.2 mm (1.74 in)/1RU
•Width—360 mm (14.17 in)
•Total depth—423.5 mm (16.67 in)
303.5 mm (11.95 in) for the
chassis
60 mm (2.36 in) for connecting
the AC/DC power cord at the
front
60 mm (2.36 in) for connecting
the E1 cable at the rear
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack posts and the
front door
•A minimum of 360 mm (14.17 in)
between the front rack posts and the
rear door
MSR2600-17
•Height—44.2 mm (1.74 in)/1RU
•Width—360 mm (14.17 in)
•Total depth—443.5 mm (17.46 in)
323.5 mm (12.74 in) for the
chassis
60 mm (2.36 in) for connecting
the AC/DC power cord at the
front
60 mm (2.36 in) for connecting
the E1 cable at the rear
•A minimum of 0.6 m (1.97 ft) in
depth (recommended)
•A minimum of 80 mm (3.15 in)
between the front rack posts and the
front door
•A minimum of 380 mm (14.96 in)
between the front rack posts and the
rear door

2-5
Installing the router in a rack
CAUTION:
The mounting brackets can support only the weight of
the router. Do not place objects on the
router.
To install the router in a rack:
1. Use a mounting bracket to mark the cage nut installation holes in the front rack posts.
Make sure the cage nut installation holes on the front rack posts are on a horizontal line.
Figure2-3 Marking cage nut installation holes
2. Install cage nuts.
a. Insert one ear of a cage nut into the marked installation hole.
b. Use a flathead screwdriver to push another ear into the same hole.
Figure2-4 Installing cage nuts
3. Attach mounting brackets to both sides of the router.
1RU

2-6
Figure2-5 Attaching mounting brackets to the router
4. Use M6 screws to attach the mounting brackets on the router to the front rack posts.
Figure2-6 Securing the router to the rack
Mounting the router on a wall
Only the MSR2600-5-GU-CNDE, MSR2600-5-GT-CNDE, and MSR2600-5-LM-CNDE routers can
be mounted on a wall.
To mount the router on a wall:
1. Mark the locations of the two mounting holes on the wall.
Make sure the holes are level and the distance between the two holes is 240 mm (9.45 in).
2. Drill the two holes at least 22 mm (0.87 in) deep.
3. Hammer a wall anchor into each hole until the anchor is flush with the wall.

2-7
4. Torque a screw into each anchor. Leave at least 1.5 mm (0.06 in) between the screw head
and the wall.
5. Hang the router on the screws.
Make sure the network ports face downwards and the sides with air vents are perpendicular
to the ground.
Figure2-7 Mounting the router on a wall
Grounding the router
CAUTION:
•
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection.
When you install and use the router, first ground the router reliably.
•Ensure a minimum resistance of 5 ohms between the router and the ground.
The MSR2600-5-GU-CNDE, MSR2600-5-GT-CNDE, and MSR2600-5-LM-CNDE routers do not
provide grounding cables. They each provide only a ring terminal. Purchase a grounding cable
yourself. The other routers each are provided with a grounding cable.
Attaching the ring terminal
1. Use the wire-stripping pliers to strip 5 mm (0.20 in) of insulation sheath off one end of the
grounding cable.
2. Wear the insulation covering on the grounding cable as shown in Figure2-8. Insert the bare
metal part of the grounding cable to the end of the ring terminal.
≥22 mm
(0.87 in)
≥1.5 mm
(0.06 in)
240 mm (9.45 in)
1
2
3 4
56

2-8
3. Use the needle-nose pliers to secure the metal part of the cable to the ring terminal end.
4. Cover the joint with the insulation covering.
5. User the blower dryer to dry the insulation covering.
6. Make sure the insulation covering fully covers the joint.
Figure2-8 Attaching the ring terminal
Grounding the router through the grounding terminal on the rack
IMPORTANT:
Make sure the rack is reliably grounded before grounding the router.
To ground the router through the grounding terminal on the rack:
1. Remove the grounding screw from the grounding hole in the rear panel of the chassis.
2. Use the grounding screw to attach the ring terminal of the grounding cable to the grounding
hole. See Figure2-9.
3. Remove the hex nut from a grounding post on the grounding terminal of the rack.
4. Use needle-nose pliers to bend a hook at the other end of the grounding cable. Attach the
hook to the grounding post and use the hex nut to secure the hook to the post. See Figure2-
10.
1
3
5
2
4
6
5 mm
(0.20 in)
Grounding cable Ring terminal Insulation covering

2-9
Figure2-9 Connecting the grounding cable to the router

2-10
Figure2-10 Grounding the router through the grounding terminal on the rack
Grounding the router with a grounding strip
If a grounding strip is available at the installation site, connect the grounding cable to the grounding
strip.
To ground the router with a grounding strip:
1. Remove the grounding screw from the grounding hole in the rear panel of the chassis.
2. Use the grounding screw to attach the ring terminal of the grounding cable to the grounding
hole.
3. Remove the hex nut from a grounding post on a grounding strip.
4. Use needle-nose pliers to bend a hook at the other end of the grounding cable. Attach the
hook to the grounding post and use the hex nut to secure the hook to the post.

2-11
Figure2-11 Grounding the router with a grounding strip
Grounding the router by burying a grounding conductor in the earth ground
If the installation site does not have any grounding strips, but earth ground is available, hammer a
0.5 m (1.64 ft) or longer angle iron or steel tube into the earth ground to serve as a grounding
conductor. The steel tube must be zinc-coated. Weld the yellow-green grounding cable to the angel
iron or steel tube and treat the joint for corrosion protection.
Installing interface modules
Installing a SIC
CAUTION:
Only
the SIC-4G-CAT6 and SIC-5G interface modules are hot swappable. To avoid unexpected
device restart or interface modules unavailability,
make sure the router is powered off before you
install an interface module other than a SIC-4G-CAT6 or SIC-5G.
Only the MSR2600-5-GU-CNDE, MSR2600-5-GT-CNDE, MSR2600-5-LM-CNDE, and MSR2660-
XS routers do not support SIC installation.
To install a SIC:
1. Use a Phillips screwdriver to remove the fastening screws on the filler panel and remove the
filler panel.
2. Push the SIC slowly into the slot along the guide rails until it makes close contact with the
backplane of the router.
3. Fasten the captive screws on the SIC.