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Appendix C Installing and Upgrading Memory and Packet Voice Data Modules
Installing a Dual In-Line Memory Module
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Cisco 1751 Router Hardware Installation Guide
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Installing a Dual In-Line Memory Module
You can install a dual in-line memory module (DIMM) to increase the amount of
dynamic RAM (DRAM) in the router. DIMMs are available in the following sizes:
•
16 MB
•
32 MB
•
64 MB
The router memory size is displayed using the show version command. This
command is described in the “Amounts of Memory” section of the “ Cisco 1751
Router Overview ” chapter.
Follow these steps to install a DIMM on the router motherboard:
Warning
During this procedure, wear grounding wrist straps to avoid ESD damage to the
router. Do not directly touch the backplane with your hand or any metal tool, or
you could shock yourself.
Step 1
Locate the DIMM slot on the motherboard, shown in Figure C-2 .
Step 2
Remove any existing DIMM by pulling the DIMM slot guides (shown in
Figure C-3 ) away from the DIMM and down towards the motherboard.
Step 3
Hold the replacement DIMM with the notched edge away from you and facing the
router.
Step 4
Insert the DIMM into the DIMM slot, making sure that the notches on the edge of
the DIMM are inserted over the bars inside the DIMM slot, as in
Figure C-3 .
Step 5
Press the DIMM firmly into the slot until the slot guides on each side of the slot
move up and over the end of the DIMM, as in
Figure C-3 . If the guides do not
move up over the edge of the DIMM, move them with your hands.