
Chapter 2: Hardware setup2-10
2.4 System memory
2.4.1 Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline
Memory Modules (DIMM) sockets.
A DDR2 module has the same physical dimensions as a DDR DIMM but has
a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are
notched differently to prevent installation on a DDR DIMM socket.
The gure illustrates the location of the DDR2 DIMM sockets:
2.4.2 Memory congurations
You may install 512 MB, 1 GB, and 2 GB unbuffered ECC or non-ECC
DDR2-533/667 DIMMs into the DIMM sockets.
• Always install DIMMs with the same CAS latency. For optimum compatibility,
we recommend that you obtain memory modules from the same vendor. Refer
to the DDR2 Qualied Vendors List on the ASUS web site.
• When installing one or two DIMMs, install the DIMM(s) to the blue slots
(DIMM_A1/DIMM_B1).
• Three DDR2 DIMMs intalled into any three memory sockets will function in
single-channel mode.
P5M2-M/RS100-E4
®
P5M2-M/RS100-E4 240-pin DDR2 DIMM Sockets
DIMM_A2
DIMM_B1
DIMM_B2
DIMM_A1
112 Pins128 Pins
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