Cisco 1721 - Manual (Page 72)

Appendix C Installing and Upgrading Memory and Virtual Private Network Modules
Locating Modules
C-4
Cisco 1721 Router Hardware Installation Guide
78-13834-02
Locating Modules
Figure C-2 shows where to find slots for a dual in-line memory module (DIMM)
and a VPN module on the router motherboard.
Figure C-2 Cisco 1700 Motherboard—Memory Locations
65635
WAN interface card slot
Rear panel of router
WAN interface card slot
[] []
DIMM slot VPN slot VPN standoff
holes
Boot ROM