Installation guide

Upgrading Memory in Cisco 4000 Series Routers 27
Upgrading Flash Memory
Removing Flash-Memory SIMMs
To remove a Flash-memory SIMM, follow these steps:
Step 1 Find the system Flash-memory sockets on the motherboard, as shown at the lower right
of Figure 13, Figure 14 or Figure 15. These sockets hold the SIMMs vertically.
Caution Handle SIMMs by the edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 2 Remove any SIMMs that you want to replace, beginning with system Flash memory
socket 1, as shown in Figure 13, Figure 14, or Figure 15. Pull the spring clips on both
sides outward and tilt the SIMM free of the clips, toward the right side of the router, as
viewed from the front. (See Figure 22.)
Step 3 Hold the SIMM by the edges with your thumb and index finger and lift it out of the socket.
Place the removed SIMM in an antistatic bag to protect it from ESD damage.
Step 4 If necessary, repeat Step 2 and Step 3 for the SIMM in system Flash memory socket 0.
Figure 22 Removing Flash-Memory SIMMs
Installing Flash-Memory SIMMs
To install a Flash-memory SIMM, follow these steps:
Step 1 Find the system Flash-memory sockets on the motherboard, as shown in Figure 13,
Figure 14, or Figure 15.
Caution Handle SIMMs by the edges only. SIMMs are ESD-sensitive components and can be
damaged by mishandling.
Step 2 Hold the SIMM with the connector edge at the bottom and the polarization notch toward
the rear of the router. (See Figure 23.)
Top view
Front of chassis
2. Push the top of the
SIMM forward.
1. Pull the locking
spring clips outward.
SIMM polarization notch
H9407