Asus M2N68 SE: 1.7 System memory

3. Align the other end of the retention bracket (near the retention bracket lock) to the

retention module base. A clicking sound denotes that the retention bracket is in place.

Make sure that the fan and heatsink assembly perfectly ts the retention mechanism

module base, otherwise you cannot snap the retention bracket in place.

4. Push down the retention bracket lock on the retention mechanism to secure the

heatsink and fan to the module base.

5. When the fan and heatsink assembly is in place, connect the CPU fan cable to the

connector on the motherboard labeled CPU_FAN.

Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if

you fail to plug this connector.

1.7 System memory

1.7.1 Overview

The motherboard comes with two 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:

DIMM support

Size Vendor Model CL Brand SS/DS Component

A* B*

1G Kingston KHX8500D2K2/2GN N/A Kingston SS Heat-Sink Package • •

1G Corsair CM2X1024-8500C5 N/A Corsair DS Heat-Sink Package • •

1G Corsair CM2X1024-8500C5D 5 Corsair DS Heat-Sink Package • •

512MB ADATA M2OMIDG3H3160INC5Z 5 ADATA SS Heat-Sink Package • •

1G ADATA M2OMIDG314720INC5Z 5 ADATA DS Heat-Sink Package • •

Channel Sockets

Channel 1 DIMM_A1

Channel 2 DIMM_B1

1-10 ASUS M2N68 SE

1.7.2 Memory congurations

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

DDR2 DIMMs into the DIMM sockets.

• 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,

we recommend that you obtain memory modules from the same vendor.

• Due to the memory address limitation on 32-bit Windows OS, when you

install 4GB or more memory on the motherboard, the actual usable memory

for the OS can be about 3GB or less. For effective use of memory, we

recommend that you install a 64-bit Windows OS when having 4GB or more

memory installed on the motherboard.

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

chips.

The motherboard can support 4 GB physical memory on the operating system listed below.

You may install a maximum of 2 GB DIMMs on each slot.

64-bit

®

Windows

XP Professional x64 Edition

®

Windows

Vista x64 Edition

M2N68 SE Motherboard Qualied Vendors Lists (QVL)

DDR2-1066MHz capability

DIMM support

Size Vendor Model CL Brand SS/DS Component

A* B*

1G Kingston KHX8500D2K2/2GN N/A Kingston SS Heat-Sink Package • •

1G Corsair CM2X1024-8500C5 N/A Corsair DS Heat-Sink Package • •

1G Corsair CM2X1024-8500C5D 5 Corsair DS Heat-Sink Package • •

512MB ADATA M2OMIDG3H3160INC5Z 5 ADATA SS Heat-Sink Package • •

1G ADATA M2OMIDG314720INC5Z 5 ADATA DS Heat-Sink Package • •

• Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is supported per channel.

When four DDR2 1066 DIMMs are installed, all DIMMs run at 800Mhz frequency by

default for system stability.

• The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the

standard way of accessing information from a memory module.Under the default state,

some memory modules for overclocking may operate at a lower frequency than the

vendor-marked value.

Chapter 1: Product introduction 1-11

DDR2-800MHz capability

DIMM support

SS/

Size Vendor Model CL Brand

Component

DS

A* B*

1G Kingston KVR800D2N5/1G N/A Samsung DS K4T51083QC-ZCE7 • •

1G Kingston KHX6400D2LL/1G N/A Kingston DS Heat-Sink Package • •

512MB Kingston KHX6400D2LLK2/1GN N/A Kingston SS Heat-Sink Package • •

512MB Kingston KVR800D2N5/512 N/A Promos SS V59C1512804QCF25SY032406PECPA • •

1G Kingston KHX6400D2K2/2G N/A Kingston DS Heat-Sink Package • •

1G Kingston KVR800D2N5/1G N/A Promos DS V59C1512804QCF25S0061904PECJA • •

512MB Samsung KR M378T6553CZ3-CE7 N/A Samsung SS K4T51083QC-ZCE7 • •

1G Samsung KR M378T2953CZ3-CE7 N/A Samsung DS K4T51083QC-ZCE7 • •

512MB Samsung KR M391T6553CZ3-CE7 N/A Samsung SS K4T51083QC-ZCE7(ECC) • •

1G Samsung KR M391T2953CZ3-CE7 N/A Samsung DS K4T51083QC-ZCE7(ECC) • •

512MB Qimonda HYS64T64000EU-2.5-B2 6 Qimonda SS HYB18T512800B2F25FSS28380 • •

1G Qimonda HYS64T128020EU-2.5-B2 6 Qimonda DS HYB18T512800B2F25FSS28380 • •

512MB Micron MT9HTF6472AY-80ED4 5 Micron SS 6ED22D9GKX(ECC) • •

1G Micron MT18HTF12872AY-80ED4 5 Micron DS 6TD22D9GKX(ECC) • •

1G Corsair CM2X1024-6400 5 Corsair DS Heat-Sink Package • •

1G Corsair XMS2-6400 4 Corsair DS Heat-Sink Package • •

1G Corsair XMS2-6400 5 Corsair DS Heat-Sink Package • •

512MB HY HYMP564U64AP8-S6 AA N/A Hynix SS HY5PS12821AFP-S6 • •

512MB HY HYMP564U64BP8-S5 AB N/A Hynix SS HY5PS12821BFP-S5 • •

512MB HY HYMP564U64CP8-S5 AB 5 Hynix SS HY5PS12821CFP-S5 • •

1G HY HYMP512U64AP8-S6 AA N/A Hynix DS HY5PS12821AFP-S6 • •

1G HY HYMP512U64BP8-S5 AB 5 Hynix DS HY5PS12821BFP-S5 • •

1G HY HYMP512U64CP8-S5 AB 5 Hynix DS HY5PS12821CFPS5 • •

512MB ADATA M20AD6G3H3160I1E58 N/A ADATA SS AD29608A8A-25EG80720 • •

512MB VDATA M2GVD6G3H3160I1E53 N/A VDATA SS VD29608A8A-25EG30648 • •

1G VDATA M2GVD6G3I4170I1E53 N/A VDATA DS VD29608A8A-25EG30647 • •

512MB PSC AL6E8E63B-8E1K 5 PSC SS A3R12E3HEF641B9A05 • •

1G PSC AL7E8E63B-8E1K 5 PSC DS A3R12E3HEF641B9A05 • •

DDR2-667MHz capability

DIMM support

Size Vendor Model CL Brand SS/DS Component

A* B*

256MB Kingston KVR667D2N5/256 N/A Kingston SS D3216TLSAKL3U • •

256MB Kingston KVR667D2N5/256 N/A Inneon SS HYB18T256800AF3SW65 33154 • •

512MB Kingston KVR667D2N5/512 N/A Elpida SS E5108AGBG-6E-E • •

1G Kingston KVR667D2N5/1G N/A Kingston DS D6408TEBGGL3U • •

1G Kingston KVR667D2N5/1G N/A Elpida DS E5108AGBG-6E-E • •

512MB Samsung KR M378T6553CZ0-CE6 N/A Samsung SS K4T51083QC • •

512MB Samsung KR M378T6453FZ0-CE6 N/A Samsung DS K4T56083QF-ZCE6 • •

512MB Samsung M378T6553CZ3-CE6 N/A Samsung SS K4T51083QC-ZCE6 • •

1G Samsung M378T2953CZ3-CE6 N/A Samsung DS K4T51083QC-ZCE6 • •

1G Samsung KR M378T2953CZ0-CE6 N/A Samsung DS K4T51083QC-ZCE6 • •

(continued on the next page)

1-12 ASUS M2N68 SE

DDR2-667MHz capability

DIMM support

SS/

Size Vendor Model CL Brand

Component

DS

A* B*

512MB Qimonda HYS64T64000EU-3S-B2 5 Qimonda SS HYB18T512B00B2F3SFSS28171 • •

1G Qimonda HYS64T128020EU-3S-B2 5 Qimonda DS HYB18T512B00B2F3SFSS28171 • •

2G Qimonda HYS64T256020EU-3S-B 5 Qimonda DS HTB18T1G800BF-3S3VV10907 • •

512MB Corsair VS512MB667D2 N/A Corsair SS 64M8CFEGPS0900647 • •

512MB Corsair VS512MB667D2 N/A Corsair DS MIII0052532M8CEC • •

1G Corsair VS1GB667D2 N/A Corsair DS MID095D62864M8CEC • •

1G Corsair XMS2-5400 4 Corsair DS Heat-Sink Package • •

256MB HY HYMP532U64CP6-Y5 AB 5 Hynix SS HY5PS121621CFP-Y5 • •

512MB HY HYMP564U64AP8-Y4 AA N/A Hynix SS HY5PS12821AFP-Y4 • •

512MB HY HYMP564U64AP8-Y5 AA N/A Hynix SS HY5PS12821AFP-Y5 • •

512MB HY HYMP564U72AP8-Y4 N/A Hynix SS HY5PS12821AFP-Y4(ECC) • •

512MB HY HYMP564U72AP8-Y5 N/A Hynix SS HY5PS12821AFP-Y5(ECC) • •

1G HY HYMP512U72AP8-Y5 N/A Hynix DS HY5PS12821AFP-Y5(ECC) • •

1G HY HYMP512U64AP8-Y5 AB N/A Hynix DS HY5PS12821AFP-Y5 • •

1G HY HYMP512U64CP8-Y5 AB 5 Hynix DS HY5PS12521CFP-Y5 • •

512MB Kingmax KLCC28F-A8EB5 N/A Elpida SS E5108AE-6E-E • •

512MB Kingmax KLCC28F-A8KB5 N/A Kingmax SS KKEA88B4LAUG-29DX • •

1G Kingmax KLCD48F-A8KB5 N/A Kingmax DS KKEA88B4LAUG-29DX • •

512MB Apacer 78.91092.420 N/A Elpida SS E5108AE-6E-E • •

512MB Apacer AU512E667C5KBGC 5 Apacer SS AM4B5708MIJS7E0627B • •

512MB Apacer AU512E667C5KBGC 5 Apacer SS AM4B5708GQJS7E06332F • •

512MB Apacer 78.91G92.9KC 5 Apacer SS AM4B5708GQJS7E0706F • •

1G Apacer AU01GE667C5KBGC N/A Apacer DS AM4B5708GQJS7E0636B • •

1G Apacer 78.01092.420 5 Elpida DS E5108AE-6E-E • •

1G Apacer AU01GE667C5KBGC 5 Apacer DS AM4B5708MIJS7E0627B • •

512MB ADATA M20EL5G3H3160B1C0Z N/A Elpida SS E5108AE-6E-E • •

512MB ADATA M20AD5G3H3166I1C52 N/A ADATA SS AD29608A8A-3EG20648 • •

512MB ADATA M20AD5G3H3166I1C52 N/A ADATA SS AD29608A8A-3EG20718 • •

1G ADATA M2OAD5G3I4176I1C52 N/A ADATA DS AD29608A8A-3EG20645 • •

2G ADATA M2OAD5H3J4170I1C53 N/A ADATA DS AD20908A8A-3EG 30724 • •

512MB VDATA M2GVD5G3H31A4I1C52 N/A VDATA SS VD29608A8A-3EC20615 • •

512MB VDATA M2YVD5G3H31P4I1C52 N/A VDATA SS VD29608A8A-3EG20627 • •

512MB VDATA M2GVD5G3H166I1C52 N/A VDATA SS VD29608A8A-3EG20637 • •

1G VDATA M2GVD5G3I41P6I1C52 N/A VDATA DS VD29608A8A-3EG20627 • •

1G VDATA M2GVD5G3I41C4I1C52 N/A VDATA DS VD29608A8A-3EC20620 • •

1G VDATA M2GVD5G3I4176I1C52 N/A VDATA DS VD29608A8A-3EG20641 • •

512MB PSC AL6E8E63B-6E1K 5 PSC SS A3R12E3GEF637BLC5N • •

512MB PSC AL6E8E63J-6E1 5 PSC SS A3R12E3JFF717B9A00 • •

1G PSC AL7E8E63B-6E1K 5 PSC DS A3R12E3GEF637BLC5N • •

1G PSC AL7E8E63J-6E1 5 PSC DS A3R12E3JFF717B9A01 • •

256MB Nanya NT256T64UH4A1FY-3C N/A Nanya SS NT5TU32M16AG-3C • •

512MB Nanya NT512T64U88A1BY-3C N/A Nanya SS NT5TU64M8AE-3C • •

Chapter 1: Product introduction 1-13

DDR2-533MHz capability

DIMM support

SS/

Size Vendor Model CL Brand

Component

DS

A* B*

256MB Kingston KVR533D2N4/256 N/A Elpida SS E5116AF-5C-E • •

512MB Kingston KVR533D2N4/512 N/A Inneon SS HYB18T512800AF3733336550 • •

1G Kingston KVR533D2N4/1G N/A Kingston DS D6408TLRAGL37U • •

256MB Samsung M378T3253FG0-CD5 N/A Samsung SS K4T56083QF-GCD5 • •

512MB Samsung M378T6553BG0-CD5 4 Samsung SS K4T51083QB-GCD5 • •

256MB HY HYMP532U64CP6-C4 AB 4 Hynix SS HY5PS121621CFP-C4 • •

1G HY HYMP512U64CP8-C4 AB 4 Hynix DS HY5PS12821CFP-C4 • •

512MB Micron MT 16HTF6464AG-53EB2 4 Micron DS D9BOM • •

512MB Micron MT 16HTF6464AG-53EB2 4 Micron DS Z9BQT • •

1G Micron MT 16HTF12864AY-53EA1 4 Micron DS D9CRZ • •

512MB Corsair VS512MB533D2 N/A Corsair DS MIII0052532M8CEC • •

512MB Corsair VS512MB533D2 N/A Corsair DS MI110052532M8CEC • •

1G Corsair VS1GB533D2 N/A Corsair DS 64M8CFEGQIB0900718 • •

512MB Elpida EBE51UD8ABFA-5C-E N/A Elpida SS E5108AB-5C-E • •

512MB Transcend 512MB DDR2 533 ECC N/A Micron SS 6ND22D9GCT(ECC) • •

512MB Kingmax KLBC28F-A8KB4 N/A Kingmax SS KKEA88B4IAK-37 • •

256MB Kingmax KLBB68F-36EP4 N/A Elpida SS E5116AB-5C-E • •

512MB Kingmax KLBC28F-A8EB4 N/A Elpida SS E5108AE-5C-E • •

512MB ADATA M2OAD2G3H3166I1B52 N/A ADATA SS AD29608A8A-37DG20719 • •

2G ADATA M20AD2H3J4170I1B53 N/A ADATA DS AD20908A8A-37DG30721 • •

SS - Single-sided / DS - Double - sided

DIMM support:

• A*: Supports one module inserted into any slot as Single-channel memory

conguration.

• B*: Supports one pair of modules inserted into either the yellow slots as

one pair of Dual-channel memory conguration.

Visit the ASUS website for the latest DDR2-533/667/800/1066MHz QVL.

1-14 ASUS M2N68 SE

1.7.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components.

Failure to do so can cause severe damage to both the motherboard and the components.

2

1. Unlock a DDR2 DIMM socket by

DDR2 DIMM notch

pressing the retaining clips outward.

2. Align a DIMM on the socket such that

the notch on the DIMM matches the

1

break on the socket.

1

Unlocked retaining clip

A DDR2 DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a

DIMM into a socket to avoid damaging the DIMM.

3. Firmly insert the DIMM into the socket

3

until the retaining clips snap back in place

and the DIMM is properly seated.

Locked Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining clips

outward to unlock the DIMM.

2

Support the DIMM lightly with your

ngers when pressing the retaining

1

clips. The DIMM might get damaged

when it ips out with extra force.

1

DDR2 DIMM notch

2. Remove the DIMM from the socket.

Chapter 1: Product introduction 1-15