Asus A8S-X - Manual (Page 20)

1-10 Chapter 1: Product introduction
1.7 System memory
1.7.1 DIMM sockets location
The following figure illustrates the location of the DDR DIMM sockets.
1.7.2 Memory configurations
You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into the
DIMM sockets using the memory configurations in this section.
Important notes
• Make sure to unplug the power supply before adding or removing DIMMs or
other system components. Failure to do so may cause severe damage to
both the motherboard and the components.
• We recommend to install the memory modules first before installing a PCI
Express x16 card.
A8S-X
®
A8S-X 184-pin DDR DIMM sockets
DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
• Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules from the
same vendor. Refer to the DDR400 Qualified Vendors List for details.
• Due to chipset resource allocation, the system may detect less than 4 GB
of system memory when you installed four 1 GB DDR memory modules.
• Due to chipset limitation, DIMM modules with 128 Mb memory chips or
double-sided x16 memory chips are not supported in this motherboard.
• Due to CPU limitation, install on Channel B slots for a single-channel
memory configuration.
• Visit the ASUS website (www.asus.com) for the latest DDR 400 Qualified
Vendor List for this motherboard.