Cisco 3600 Series Configuration Note - Page 12

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Cisco 3600 Series Configuration Note
Upgrading DRAM
Table 3
Bank 0
(SIMM 0)
(MB)
16
16
16
16
16
16
16
16
DRAM Orientation
SIMMs are manufactured with a polarization notch to ensure proper orientation and alignment holes
to ensure proper positioning. Figure 6 shows the polarization notch and alignment holes on a SIMM
card. Cisco 3600 series DRAM SIMM cards are installed with the connector edge down, the
polarization notch near the front of the chassis, and the component side facing the right side of the
chassis.
Caution
damaging the motherboard, avoid using excessive force when you remove or replace SIMMs.
Figure 6
Removing DRAM SIMMs
Follow these steps to remove DRAM SIMMs:
Step 1
Caution
damaged by mishandling.
12 Cisco 3600 Series Memory Upgrade Configuration Note
Cisco 3640 32-Bit-Wide DRAM Configurations (Continued)
Bank 1
Bank 2
(SIMM 1)
(SIMM 2)
(MB)
(MB)
16
8
16
4
16
4
16
8
16
8
16
16
16
16
16
16
To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid
Cisco 3600 Series DRAM SIMM
Alignment holes
Connector edge
Find the DRAM SIMM sockets on the motherboard, as shown in Figure 4 or Figure 5.
Handle SIMMs by the card edges only. SIMMs are ESD-sensitive components and can be
Bank 3
Total
(SIMM 3)
Memory
(MB)
(MB)
–
40
8
44
16
52
4
44
16
56
–
48
4
52
8
56
Polarization notch