Asus P5P43TD/USB3 - Manual (Page 22)

1-12 Chapter 1: Product introduction
1.7 System memory
1.7.1 Overview
The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets. The figure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2
4. Carefully remove the heatsink and fan
assembly from the motherboard.
5. Rotate each fastener clockwise to ensure
correct orientation when reinstalling.