Dell PowerEdge 750 - Manual (Page 54)

Installing the Riser Board
1. Slide the riser board onto the system board. See Figure 6 -7 .
2. Tighten the two captive screws that secure the riser board to the system board. See Figure 6 -7 .
3. Install any expansion card(s). See " Installing an Expansion Card ."
4. Close the system. See " Closing the System " in Troubleshooting Your System."
System Memory
The four memory module sockets are located on the system board adjacent to the power supply and can accommodate from 256 MB to 4 GB of unbuffered ECC
P C-3200 (DDR400) memory. See
Figure 6 -1 for the location of the memory module sockets.
You can upgrade the system memory by installing combinations of 256-, 512-MB, and 1-GB unbuffered memory modules. If you receive an error message
stating that maximum memory has been exceeded, see "
Indicators, Messages, and Codes " for more information. You can purchase memory upgrade kits from
Dell.
Memory Module Installation Guidelines
The memory module sockets are arranged in banks (1 and 2) on two channels (A and B). The memory module banks must be installed in identical pairs.
The memory module banks are identified as follows:
Bank 1: DIMM1_A and DIMM1_B
Bank 2: DIMM2_A and DIMM2_B
For example, if socket DIMM1_A contains a 256-MB memory module, then socket DIMM1_B must contain a 256-MB memory module.
Table 6 -1 shows examples of different memory configurations.
l If only one memory module is installed, it must be installed in the DIMM1_A socket.
CAUTION: See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.
NOTE: The memory modules must be PC-3200 compliant.