Installation guide

Replacing Memory in Cisco 4000 Series Routers C-5
Replacing Main Memory SIMMs
Figure C-3 Cisco 4000 Series Main Memory SIMM
Removing Main Memory SIMMS
Take the following steps to remove main memory SIMMs:
Step 1 Put on an ESD-preventive wrist strap and ensure that it makes good contact with
your skin. Connect the equipment end of the wrist strap to the metal back plate of
the chassis, avoiding contact with the connectors.
Step 2 On the motherboard, locate the main memory SIMM card sockets shown in the
upper right corner of Figure C-1 (for the Cisco 4000-M) and Figure C-2 (for the
Cisco 4500-M and Cisco 4700-M).
Caution Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components
and can be damaged by mishandling.
Step 3 Remove one SIMM at a time, beginning with the SIMM farthest from the edge of
the motherboard. (The Cisco 4000-M has only one main memory SIMM.)
Step 4 Pull the locking spring clips on both sides outward and tilt the SIMM free of the
clips to lift the SIMM out of its socket. (See Figure C-4.)
Alignment holes
Connector edge
Polarization notch
H2407