Asus V2-PE3 2.5.1 Memory configurations, 2.5Installing a DIMM, DDR and DDR2 DIMM Sockets, The following figure illustrates the location of the sockets:

2.5Installing 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:

DDR2 A1 DDR2 B1

DDR A1 DDR B1

DDR and DDR2 DIMM Sockets

To prevent damage to the motherboard, do not use DDR and DDR2 memory simultaneously.

2.5.1 Memory confi gurati ons

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.

•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.

2-8 Chapter 2: Basic installation