Cisco 3600 Series Installation Manual page 11

Chapter 5 Installing Memory in the Router
Table 5-3
Bank 0
(SIMM 0)
16 MB
16 MB
32 MB-Dual
32 MB-Dual
32 MB-Dual
32 MB-Dual
32 MB-Dual
32 MB-Dual
1. 8 MB = single-bank SIMM, 8 MB in size.
2. 8 MB-Dual = dual-bank SIMM, 8 MB in size.
3. 32 MB-Dual = dual-bank SIMM, 32 MB in size.
DRAM SIMM Orientation
SIMMs have a polarization notch to ensure proper orientation and alignment holes to ensure proper
positioning.
are installed with the connector edge down and the polarization notch near the front of the chassis.
To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid damaging the
Caution
underlying mainboard, do not use excessive force when you remove or replace SIMMs.
Figure 5-7
OL-2056-02
64-Bit DRAM Configuration for Cisco 3640 Routers (continued)
Bank 1 Bank 2
(SIMM 1) (SIMM 2)
16 MB 8 MB-Dual
16 MB 16 MB
3
32 MB-Dual Not installed Not installed 64 MB
32 MB-Dual 4 MB
32 MB-Dual 8 MB
32 MB-Dual 8 MB-Dual
32 MB-Dual 16 MB
32 MB-Dual 32 MB-Dual 32 MB-Dual 128 MB
Figure 5-7 shows the polarization notch and alignment holes on a SIMM. DRAM SIMMs
DRAM SIMM
Alignment holes
Connector edge
Bank 3 Total
(SIMM 3) Memory
8 MB-Dual 48 MB
16 MB 64 MB
4 MB 72 MB
8 MB 80 MB
8 MB-Dual 80 MB
16 MB 96 MB
Polarization notch
Cisco 3600 Series Hardware Installation Guide
Replacing DRAM and SDRAM
5-11