Cisco 1721 - Manual (Page 38)

Chapter 2 Installation
Installing WICs
2-6
Cisco 1721 Router Hardware Installation Guide
78-13834-02
Installing the Cards
Follow these steps to install the card in a Cisco 1721 router:
Step 1 Make sure that the power switch is set to the STANDBY position ( ) and that
the power cable is not connected to the power socket on the rear panel.
Caution Power must be removed from the system prior to installing or removing WICs
to avoid damaging them. When WICs are pushed into or pulled out of a router
that is powered up, there is a very good chance that they could be damaged
electrically and will no longer function.
Step 2 Loosen the thumbscrews on the WIC slot cover on the rear panel, as shown in
Figure 2-2 , and then remove the slot cover. You should be able to loosen the
screws using your fingers; however, if the screws are very tight, you might need
to use a Phillips screwdriver.
Figure 2-2 Removing the WIC Slot Cover
65526
FDX
LINK 100
WIC0O
K
WIC1O K
MOD OK
CONSOLE
AUX
Model
Cisco 1
721
10/100 ETHERNET
+5, +12, -12
VDC
WAN interface card slot cover