Installation guide

Upgrading Memory in Cisco 4000 Series Routers 19
Memory Locations
Figure 13 Cisco 4000-M Memory Locations
Main memory SIMM socket
with proper SIMM orientation
Chassis Front
Motherboard
Shared-memory
SIMM socket
H2403
Flash memory
SIMM sockets
J1
FW1
FW2
Boot ROMs
J4
J6
U114
U110
J7
J8
Boot ROM jumpers (J7 and J8)
J6
Pin 1
J6 write-enable
jumper position
J7
J8
Pin 1
U44
U3