2-8
Chapter 2: Basic installation
2.5
Installing a DIMM
The motherboard comes with two 240-pin Double Data Rate 2 (DDR2) and
two 184-pin DDR Dual Inline Memory Modules (DIMM) sockets.
DDR2 DIMMS are notched differently to prevent misplacement in DDR DIMM
sockets.
The following figure illustrates the location of the sockets:
2.5.1 Memory configurations
You may install 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR/DDR2
DIMMs into the DIMM sockets using the memory configurations in this
section.
To prevent damage to the motherboard, do not use DDR and DDR2
memory simultaneously.
• 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 DDR/DDR2
Qualified Vendors List on the next page for details.
• Due to chipset resource allocation, the system may detect
less than 2 GB system memory when you installed two 1 GB
DDR or DDR2 memory modules.
DDR and DDR2 DIMM Sockets
DDR_A1
DDR_B1
DDR2_A
1
DDR2_B
1
®
