Sdram dimm removal and installation, Figure 52 – Cisco 3800 Series User Manual
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Installing and Upgrading Internal Components in Cisco 3800 Series Routers
OL-5975-04
SDRAM DIMM Removal and Installation
Figure 52
Component Locations on a Cisco 3845 Motherboard
SDRAM DIMM Removal and Installation
Cisco 3800 series routers ship with 256 MB of ECC DDR SDRAM. The two DIMM slots can be 
upgraded with 128-MB, 256-MB, or 512-MB DIMMs to a maximum of 1024 MB. If only one SDRAM 
DIMM is used, it can be installed in either DIMM connector. 
Caution
When you remove or install DIMMs, always wear an ESD-preventive wrist strap, and ensure that it 
makes good contact with your skin. Connect the equipment end of the wrist strap to the metal part of the 
router.
Caution
Handle DIMMs by the edges only. DIMMs are ESD-sensitive components and can be damaged 
by mishandling.
1
PVDM3
6
AIM1
2
PVDM2
7
MEM0
3
PVDM1
8
MEM1
4
PVDM0
9
Jumper headers
5
AIM0
10 Power connector for fan tray assembly
4
2
1
3
8
5
6
7
117937
9
10