Installation guide

26 Upgrading Memory in Cisco 4000 Series Routers
Upgrading Flash Memory
Figure 21 Installing Shared-Memory SIMMs
If you are finished upgrading memory, continue with the section “Replacing Network Processor
Modules” later in this document.
Upgrading Flash Memory
Flash memory in the Cisco 4000 router resides on a separate daughter card. To add memory to the
original daughter card, see the section “Adding Memory to the Flash EPROM Card” earlier in this
document. To replace the card, see the sections “Removing the Flash EPROM Card” and “Installing
the Flash EPROM Card (Cisco 4000 Router Only).” When you upgrade the Flash EPROM card, you
also install new boot ROMs (which are included in the upgrade kit) and change the boot ROM
jumpers (J5 and J6).
To upgrade system Flash memory in other routers, add a second Flash SIMM. For the Cisco 4500-M,
Cisco 4700, and Cisco 4700-M routers, you can also replace 4-MB Flash-memory SIMMs with
8-MB SIMMs. In all routers, when both system Flash-memory sockets are filled, equal memory
sizes are required.
Polarization notch
Push the SIMM down and back
The socket guide posts
insert through the SIMM holes
(on both sides)
Push the SIMM down and back
Side view, SIMM inserted
Top view
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