Dimm location and orientation, Removing an sdram dimm – Cisco 3800 Series User Manual

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Installing and Upgrading Internal Components in Cisco 3800 Series Routers

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SDRAM DIMM Removal and Installation

DIMM Location and Orientation

The two SDRAM DIMM connectors are located on the motherboard and are identified as MEMORY 0
and MEMORY 1 on the Cisco 3825 router, and as MEM0 and MEM1 on the Cisco 3845 router. See

Figure 51

and

Figure 52

for DIMM locations.

DRAM DIMMs have a polarization notch on the mating edge to prevent incorrect insertion.

Figure 53

shows the polarization notch on a DRAM DIMM.

Figure 53

DRAM DIMM Polarization Notch

Removing an SDRAM DIMM

To remove an SDRAM DIMM from the motherboard, follow these steps:

Step 1

Pull the latches away from the DIMM at both ends. This lifts the DIMM slightly. Lift the DIMM
completely out of the connector. See

Figure 54

Figure 54

Removing a DRAM DIMM

Polarization notch

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Release the latches

Remove the DIMM

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