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2-8 Chapter 2: Basic installation
2.6 Installing a DIMM
The system motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline
Memory Module (DIMM) sockets.
The following gure illustrates the location of the sockets:
• Installing DDR2 DIMMS other than the recommended congurations
may cause memory sizing error or system boot failure. Use any of the
recommended congurations in the table on the next page.
• Install only
identical (the same type and size) DDR2 DIMMs in DIMM_A1
and DIMM_B1.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from the
same vendor.
• Due to chipset resource allocation, the system may detect less than 4 GB
system memory when you installed two 2 GB DDR2 memory.
• This motherboard does not support memory modules made up of 128 Mb
chips or double-sided x16 memory modules.
2.6.1 Memorycongurations
You may install up to 4 GB system memory using 256 MB, 512 MB, 1 GB, and
2 GB DDR2 DIMMs.
Recommendedmemorycongurations
Mode Sockets
DIMM_A1 DIMM_B1
Single-channel Populated
Populated
Dual-channel Populated Populated
R
P5K18L
P5K18L
240-pin DDR2 DIMM Sockets
128 Pins
112 Pins
DIMM_B1
DIMM_A1