Asus M2N-XE User Manual download pdf (Page 24)

1-12 Chapter 1: Product introduction

• You may install varying memory sizes in Channel A and Channel B. The

system maps the total size of the lower-sized channel for the dual-channel

conguration. Any excess memory from the higher-sized channel is then

mapped for single-channel operation.

• Always install DIMMs with the same CAS latency. For optimum compatibility,

it is recommended that you obtain memory modules from the same vendor.

• This motherboard does not support memory modules made up of 128 Mb

chips or double sided x16 memory modules.

1.7.2 Memory congurations

You may install 256 MB, 512 MB, 1 GB, and 2GB unbuffered / ECC / non-ECC

DDR2 DIMMs into the DIMM sockets.

1.7 System memory

1.7.1 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

Channel B DIMM_B1

M2N-XE

240-pin DDR2 DIMM Sockets

128 Pins

112 Pins

DIMM_B1

DIMM_A1

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 89 90

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Asus M2N-XE User Manual Page 24