Dell POWEREDGE 4300, Инструкция по установке и устранению неисправностей, Страница: 132 / 217

8-8 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide
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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).
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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.
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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:
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Install a DIMM in socket DIMM_A before socket DIMM_B, socket DIMM_B
before socket DIMM_C, and so on.
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If you install different sizes of DIMMs, install them in order of descending capac-
ity, beginning with the highest-capacity DIMM in socket DIMM_A.
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Unbuffered and registered DIMMs cannot be mixed. If you install 256-MB regis-
tered DIMMs, you must remove any 64- or 128-MB unbuffered DIMMs from the
computer.
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DIMMs need not be installed in pairs.