System Memory; Overview; Memory Configurations - Asus M2N-X PLUS User Manual

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 figure illustrates the location of the DDR2 DIMM sockets:
M2N-X PLUS 240-pin DDR2 DIMM Sockets
Channel
Channel A
Channel B
1.7.2

Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2GB unbuffered / ECC / non-ECC
DDR2 DIMMs into the DIMM sockets.
•
•
•
1-12
R
M2N-X PLUS
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
configuration. 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.
Sockets
DIMM_A1
DIMM_B1
Chapter 1: Product introduction