Dell PowerEdge 500SC - Manual (Page 41)

Adding Memory
The four memory module sockets on the system board can accommodate 64 MB to 2 GB of registered SDRAM (see Figure 6 -1 ).
Memory Upgrade Kits
The system is upgradable to 2 GB by installing combinations of 64-, 128-, 256-, and 512-MB registered memory modules. If you receive an error message
stating that maximum memory has been exceeded, see "
Indicators, Messages, and Codes ," for detailed information. You can purchase memory upgrade kits
as needed.
Memory Module Installation Guidelines
For optimum operation, install the memory modules starting with the DIMM_A socket (furthest from the microprocessor) and working toward the DIMM_D
socket, leaving no open sockets between installed memory modules.
Figure 6-7. Memory Module Sockets
Table 6 -2 illustrates several sample memory configurations based on these guidelines.
Performing a Memory Upgrade
1. Remove the system cover (see " Removing the System Cover and Support Beam " in "Troubleshooting Your System").
2. Locate the memory module sockets in which you will install or replace memory modules. Figure 6 -7 shows the order of the memory module sockets.
3. Install or replace the memory module as necessary to reach the desired memory total (see " Installing Memory Modules " or " Removing Memory
Modules ").
4. Replace the system cover, reconnect the system to the electrical outlet, and turn on the system (see " Replacing the System Cover and Support Beam "
in "Troubleshooting Your System"). After the system completes the POST routine, it runs a memory test.
The system detects that the new memory does not match the system configuration information, which is stored in NVRAM. The monitor displays an error
message that ends with the following words:
NOTE: The memory modules must be PC-133 compliant.
Table 6-2. Sample Memory Module Configurations
Total Memory DIMM_A DIMM_B DIMM_C DIMM_D
64 MB 64 MB — — —
128 MB 128 MB — — —
256 MB 128 MB 128 MB — —
512 MB 256 MB 256 MB — —
768 MB 256 MB 256 MB 256 MB —
1 GB 256 MB 256 MB 256 MB 256 MB
2 GB 512 MB 512 MB 512 MB 512 MB
WARNING: 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."
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.