Asus P5QL - Manual (Page 38)

2-16 Chapter 2: Hardware information
Visit the ASUS website for the latest DDR2-1066/800/667MHz QVL.
SS - Single-sided / DS - Double - sided
DIMM support:
• A*: Supports one module inserted into any slot as Single-channel memory
configuration.
• B*: Supports one pair of modules inserted into either the yellow slots or the
black slots as one pair of Dual-channel memory configuration.
• C*: Supports four modules inserted into both the yellow slots and the black
slots as two pairs of Dual-channel memory configuration.