2.4System memory

2.4.1Overview

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 figure illustrates the location of the DDR2 DIMM sockets:

DIMM_B2

DIMM_A2

DIMM_B1

DIMM_A1

Pins 112 Pins 128

M2N/M2N DH 240-pin DDR2 DIMM Sockets

Channel

Sockets

Channel A

DIMM_A1 and DIMM_A2

Channel B

DIMM_B1 and DIMM_B2

2.4.2Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2GB unbuffered ECC/non-ECC DDR2 DIMMs into the DIMM sockets.

Recommended Memory Configurations

Mode

 

 

Sockets

 

DIMM_A1

DIMM_A2

 

DIMM_B1

DIMM_B2

 

Populated

–

 

–

–

Single Channel

–

Populated

 

–

–

–

–

 

Populated

–

 

 

 

–

–

 

–

Populated

Dual-channel (1)

Populated

–

 

Populated

–

 

–

Populated

 

–

Populated

Dual-channel (2)

Populated

Populated

 

Populated

Populated

ASUS M2N / M2N DH

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