Asus P5V900 - Manual (Page 26)

2-8 Chapter 2: Basic installation
2.5 Installing a DIMM
The system motherboard comes with two Double Data Rate 2 (DDR2) Dual
Inline Memory Module (DIMM) sockets.
The following figure illustrates the location of the sockets:
• Install only identical (the same type and size) DDR2 memory
modules.
• Install only ASUS-certified memory modules. Refer to the DDR2
Qualified Vendors List on the next page for details.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from
the same vendor.