Asus P5P43TD/USB3 - Manual (Page 22)

1-12 Chapter 1: Product introduction
1.7 System memory
1.7.1 Overview
This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The figure illustrates the location of the DDR3 DIMM sockets:
4. Carefully remove the heatsink and fan
assembly from the motherboard.
5. Rotate each fastener clockwise to ensure
correct orientation when reinstalling.
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2