![](http://pdfasset.owneriq.net/2/11/2117d7ff-643e-42a7-9af0-a7c70ffd4d05/2117d7ff-643e-42a7-9af0-a7c70ffd4d05-bg22.png)
2-10 Chapter 2: Hardware information
2.4 System memory
2.4.1 Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory
Modules (DIMM) sockets.
A DDR2 module has the same physical dimensions as a DDR DIMM but has a
240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched
differently to prevent installation on a DDR DIMM socket.
The gure illustrates the location of the DDR2 DIMM sockets:
Channel Sockets
Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2