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Step 1Remove the four mounting screws of the top cover.
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Step 2Install the left-side FIPS cover, as shown in detail A.
Step 3Rotate and bring into the close position to hinge to the correct hexagon.
Step 4Place the adapter plate before closing by aligning the mounting holes.
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Step 5Secure the FIPS cover with two mounting screws.
Step 6Install the right-side FIPS cover the same way as the left-side FIPS cover.
Step 7View after both covers are installed.
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Step 8If the FIPS covers are installed with the rack mount brackets, the adapter plates are not required in the 
installation.
Installing Antennas for Cisco 890 Series
The Cisco 890 series wireless routers have three reverse-polarity threaded Neill-Concelman (RP-TNC) 
connectors on the back panel. The antennas that are shipped with the router are dual-band 2.4-GHz to 
5-GHz omnidirectional dipole antennas.
WarningAll wireless LAN products in the 5.2/5.3GHz band cannot be used outdoors. Use the product only 
indoors. Statement 372
NoteBefore you install the Cisco 890 series wireless router on a table, wall, or rack, connect the antennas to 
the back panel. It is difficult to attach the antennas after the router is installed.
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To attach the radio antennas to your wireless router, follow these steps:
Step 1Manually screw the antennas tight to the RP-TNC connectors on the back of the router.
Figure 2-45 Attaching Antennas to the Router
Step 2
Orient the antennas. For optimum wireless performance, the antennas should be perpendicular with 
respect to the floor.
a.If the router is being mounted on a desk, orient the antennas straight up.
b.If the router is being mounted on a wall, orient the antennas perpendicular to the floor, as shown in 
Figure 2-46 and Figure 2-47.
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Figure 2-46 Antennas Oriented Vertically Up
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Figure 2-47 Antennas Oriented Vertically Down
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Installing Cisco 890 Series in a Rack
The Cisco 890 series ISRs can be mounted in a rack.
To install a Cisco 890 series ISR in a rack, follow these steps:
Step 1Remove the screws, as shown in Figure 2-48.
Figure 2-48 Screw Locations
Step 2
Using the screws provided, attach the rack-mount brackets to the Cisco 890 series ISR chassis, as shown 
in Figure 2-49. Use two screws on each side. Use a number 2 Phillips screwdriver to install the bracket 
screws on both sides of the chassis.
CautionDo not over torque the screws. The recommended torque is 6 to 8 in-lb (0.7 to 0.9 N-m).1Screws
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Figure 2-49 Attaching the Rack-mount Brackets to the Cisco 890 Series ISR
CautionChassis installation must allow unrestricted airflow for chassis cooling.
Step 3Using two screws for each side (supplied with the rack), attach the Cisco 890 series ISR with rack-mount 
brackets to a 19-inch rack. Start with the lower pair of screws first, resting the brackets on the lower 
screws while you insert the upper pair of screws.
NoteBe sure to leave space above and below each unit in a rack to allow for cooling air circulation.
NoteDo not stack equipment directly above the router. Keep at least 1 rack unit of space above the 
router.
TipThe screw slots in the brackets are spaced to line up with every second pair of screw holes in the 
rack. When the correct screw holes are used, the small threaded holes in the brackets line up with 
unused screw holes in the rack. If the small holes do not line up with the rack holes, you must 
raise or lower the brackets to the next rack hole.
Step 4Place the power adapter on a nearby horizontal surface.
WarningTo prevent bodily injury when mounting or servicing this unit in a rack, you must take special 
precautions to ensure that the system remains stable. The following guidelines are provided to 
ensure your safety:
 This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
 When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest 
component at the bottom of the rack.
 If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in 
the rack. 
Statement 1006
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Step 5Connect the chassis to a reliable earth ground. For the chassis ground connection procedures, see the 
“Installing Cisco 890 Series in a Rack” section on page 2-58.
Installing the C881G-B/S/V-K9 ISR
To install the C881G-B/S/V-K9 ISR, follow the instructions in the “Installing the Cisco 860, 880, and 
890 Series Routers” section on page 2-45.
However, the instructions for connecting the 3G card in the hardware installation guide do not apply to 
the C881G-B/S/V-K9 ISR because it does not have a slot for adding a SIM card. These are 
CDMA/EV-DO based routers and do not require a SIM card.
Installing Antennas
For instructions on installing the antennas for the Cisco 881 routers, please refer to the “Installing 
Antennas” section on page 2-60.
Installing the C881GW-S/V-A-K9 ISR
To install the C881GW-S-A-K9 and C881GW-V-A-K9 ISRs, follow the instructions in the “Installing 
the Cisco 860, 880, and 890 Series Routers” section on page 2-45 section.
However, the instructions for connecting the 3G card in the hardware installation guide do not apply 
because these ISRs do not have a slot for adding a 3G card. Instead, a 3G modem is embedded in the 
router.
Installing Antennas
For instructions on installing the antennas for the Cisco 881 routers, please refer to the “Installing 
Antennas” section on page 2-60.
Installing the C881G-U-K9 ISR
To install the C881G-U-K9 ISR, follow the instructions in the “Installing the Cisco 860, 880, and 890 
Series Routers” section on page 2-45.
However, the instructions for connecting the 3G card in the hardware installation guide do not apply to 
the C881G-U-K9 ISR because it does not have a slot for adding a 3G card. Instead, a 3G modem is 
embedded in the router.
Installing the SIM Cards
You can install one or two SIM cards into the C881G-U-K9 ISR. Installing two SIM cards lets you take 
advantage of the Dual SIM feature, which provides a failover mechanism in case the primary SIM card 
fails.
Figure 50 shows the SIM car installation steps.