Cisco 4000 Series Upgrade Manual

Upgrading Cisco 4500, Cisco 4500-M, Cisco 4700, and Cisco 4700-M Memory 13
Memory Replacement Procedures
Figure 9 Cisco 4700-M and Newer Versions of the Cisco 4500-M Memory Component Locations
Replacing Main Memory SIMMs
SIMMs are manufactured with a polarization notch to prevent them from being installed backward.
Figure 10 shows the polarization notch and locations of the alignment holes on a main memory
SIMM card. The main memory SIMM cards are installed with the connector edge down and the
component side facing in, as shown in the upper right corner of Figure 8 and Figure 9.
Figure 10 Main Memory SIMM
Main memory SIMM sockets
with correct SIMM orientation
Front of chassis
Motherboard
Shared-memory
SIMM and socket
H6665
System Flash memory 1
J5
J1
J6
System Flash memory 0
RxBoot Flash memory
Jumper in place enables 
writing to Flash memory
Jump pins
1 and 2
Jump pins 1 and 2
ROM monitor
U78
NVRAM
Alignment holes
Connector edge
Polarization notch
H2407

Cisco 4000 Series Specifications

General

Brand	Cisco
Model	4000 Series
Category	Network Router
Language	English