Dell PowerEdge 4300 Dell PowerEdge 4300 Systems Installation and Troubleshooti - Page 132
Install a DIMM in socket DIMM_A before socket DIMM_B, socket DIMM_B
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The four dual in-line memory module (DIMM) sockets on the system board can accommodate 64 megabytes (MB) to 1 gigabyte (GB) of dynamic random-access memory (DRAM). Dell PowerEdge 4300 systems use 72-bit DIMMs in these 168-pin sockets. The DIMM sockets are located near the back edge of the system board (see Figure 8-1). The system is upgradable to 1 GB by installing combinations of 64- and 128-MB unbuffered DIMMs or, when available, 256-MB registered DIMMs. Memory upgrade kits can be purchased from Dell as needed. NOTE: The DIMMs must be rated to run at 100 megahertz (MHz) or faster. Starting with the socket nearest to the system board's back edge, the DIMM sockets are labeled "DIMM_A" through "DIMM_D" (see Figure 8-5). When installing DIMMs, follow these guidelines: Install a DIMM in socket DIMM_A before socket DIMM_B, socket DIMM_B before socket DIMM_C, and so on. If you install different sizes of DIMMs, install them in order of descending capacity, beginning with the highest-capacity DIMM in socket DIMM_A. Unbuffered and registered DIMMs cannot be mixed. If you install 256-MB registered DIMMs, you must remove any 64- or 128-MB unbuffered DIMMs from the computer. DIMMs need not be installed in pairs. 8-8 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide