Dell PowerEdge 1750 - Manual (Page 49)

Memory Module Upgrade Kits
The system is upgradable to 8 GB by installing combinations of 128-, 256-, 512-MB, 1-GB, or 2-GB registered memory modules. You can purchase memory
upgrade kits as needed.
Memory Module Installation Guidelines
Starting with the socket closest to the edge of the system board, the memory module sockets are labeled DIMM_1A and DIMM_1B (bank 1) and DIMM_2A and
DIMM_2B (bank 2). See Figure 6 -3 . When you install memory modules, follow these guidelines:
l You must install memory modules in matched pairs (bank 1 DIMMs must match; bank 2 DIMMs must match).
l Install a pair of memory modules in bank 1 before installing a second pair in bank 2.
Figure 6-3. Memory Module Sockets
Table 6 -1 illustrates several sample memory configurations based on these guidelines.
Table 6-1. Sample Memory Configurations
Performing a Memory Module Upgrade
To perform a memory module upgrade to the system board, perform the following steps.
1. Open the system covers. See " Opening the System Covers " in "Troubleshooting Your System."
2. Locate the memory module sockets in which you will install or replace memory modules.
Figure 6 -3 identifies the memory module banks on the system board and shows the order of the socket designations.
3. Install or replace the memory modules as necessary to reach the desired memory total. See " Installing Memory Modules " or " Removing Memory
Modules ."
4. Close the system covers. See " Closing the System Covers " in "Troubleshooting Your System."
5. Reconnect the system to the electrical outlet, and turn on the system.
NOTE: The memory modules must be rated for 266-MHz operation.
BANK1 BANK2
Total Desired Memory DIMM_1A DIMM_1B DIMM_2A DIMM_2B
256 MB 128 MB 128 MB none none
512 MB 256 MB 256 MB none none
1 GB 256 MB 256 MB 256 MB 256 MB
4 GB 1 GB 1 GB 1 GB 1 GB
8 GB 2 GB 2 GB 2 GB 2 GB
CAUTION: Before you perform this procedure, you must turn off the system and disconnect it from its power source. For more information, see
" Safety First—For You and Your System " in "Troubleshooting Your System."