Asus M2N68-LA User manual

Motherboard
M2N68-LA
(Narra 3)

ii
E3503
First Edition V1
October 2007
M2N68-LA (Narra 3) specications summary .......................................... iii
1. Motherboard layout......................................................................... 1
2. Central Processing Unit (CPU) ...................................................... 2
2.1 Overview ............................................................................ 2
2.2 Installing the CPU .............................................................. 2
3. System memory .............................................................................. 4
3.1 Memorycongurations....................................................... 4
3.2 Installing a DIMM ............................................................... 5
3.3 Removing a DIMM ............................................................. 5
4. Expansion slots .............................................................................. 6
4.1 PCI Express x16 slot.......................................................... 6
4.2 PCI Express x1 slot............................................................ 6
4.3 PCI slots............................................................................. 6
5. Jumpers ........................................................................................... 7
6. Connectors ...................................................................................... 9
6.1 Rear panel connectors....................................................... 9
6.2 Internal connectors ...........................................................11
Contents

iii
M2N68-LA (Narra 3) specications summary
(continued on the next page)
CPU Socket AM2 for AMD Athlon™64 / Athlon™64 X2 /
Sempron™Rev F / Rev G 89W/ Phenom X4 9600 95W/
Phenom X2 65W and 89W (Socket-AM2+) processor
CPUFSBsupportsupto2000MT/sec
Chipset NVIDIA®MCP61P(co-layoutwithMCP68)
Memory Dual-channelmemoryarchitecture
 4x240-pinDIMMsocketssupportupto8GBnon-
 ECC1.8VDualChannelDDR2800/667SDRAM
 memory(registeredDIMMsarenotsupported)
Expansion slots 1 x PCI Express™x16 slot for discrete graphics card
2 x PCI Express™x1 slot
1 x PCI slots
Onboard I/O 1 x PS/2 keyboard port
1xPS/2mouseport
1 x VGA port
6xAudiojacks
1 x RJ-45 10/100 LAN connector
10xUSB2.0ports(supporthot-plugfunction)
1 x Floppy connector
1 x IDE connector
4xSATA3Gconnectors
Onboard IDE NVIDIA® MCP61embeddedonechannelBusMasterIDE
 portsupportsUltraDMA66/100,PIOMode3/4
NVIDIA®MCP61embedded4SATAports
ATAPIIDEDVD-ROM,CD-ROM,CD-R,CD-RWand
 LS-120supported
Onboard audio SupportsHDaudiocodecthatincludesline-in,line-out
 (7.1channel),microphone-in,andS/PDIF-out
AudioJackPresenceDetection(allfrontandrearjacks)
 mustcomplywithIntel®HighDenitionaudio
 specication1.0section7.4.2
Using Realtek®audiocodecALC888S
Onboard LAN Realtek® RTL8201n10/100MbpsEthernetPHY
PC health monitoring ASUSF8000forCPU/Systemfancontrol,linearfan
 speedcontrolandCPUtemperaturemonitoring

iv
M2N68-LA (Narra 3) specications summary
Front panel and back
panel
Front panel:
 1x9-pinheaderforPowerButton,ResetButton,
  PowerLED,HDDLED
2 x 9-pin header for USB front panel (4 ports)
 2x4-pinheaderforUSBminiPMDuse(2ports)
 1x9-pinheaderforAudio
1 x 9-pin header for IEEE 1394
Back panel:
1 x PS/2 keyboard
 1xPS/2mouse
1 x 15-pin VGA
2 x USB + RJ-45 LAN connector
2 x USB + 1 x IEEE 1394
 Azalia6portsaudiojack:4xLine-out,1xLine-in,
  1xMic-in(withjackretaskingsupport)
Onboard connector 24-pinATXpowerconnector
4-pinATX12Vpowerconnector
1 x Intel®HDaudiofrontpanel2x5-pinheader
1 x Front line-in
2 x USB front panel 9-pin headers
2 x USB front panel 4-pin headers
1 x IEEE 1394 9-pin header
1xS/PDIF-out(forHDMI)
1xHDMI2x8-pinheader
1 x CPU fan connector
1 x System fan connector
BIOS features Award code base
4Mb SPI Serial Flash
HPBIOSwithEnhancedACPI,DMI,Green,PnP
 FeaturesPlus
Form factor uATXformfactor:9.6”x9.6”
*Specicationsaresubjecttochangewithoutnotice.

M2N68-LA (Narra 3) 1
1. Motherboard layout
PCIE_X1_1
M2N68-LA
PS/2KBMS
T: Mouse
B: Keyboard
ALC888
CLEAR CMOS
CLEAR P.W
F_USB1
PC2
BUZZER
F_PANEL
F_USB2
Super
I/O
Asus
F8000
F_AUDIO
F_LINE_IN
ATXPOWER
Socket AM2
CR2032 3V
Lithium Cell
CMOS Power
NVIDIA®
MCP61P
PCIE_X16
SATA4 SATA3
RTL8201N
DDR2 XMM1 (64 bit,240-pin module)
DDR2 XMM2 (64 bit,240-pin module)
PRIMARY_IDE
FLOPPY
CPU_FAN
ATX_CPU
CHASSIS_FAN1
VGA
24.5cm (9.6in)
24.5cm (9.6in)
SATA1 SATA2
DDR2 XMM3 (64 bit,240-pin module)
DDR2 XMM4 (64 bit,240-pin module)
F_1394
agere
L-FW3227-100
1394+USB
LAN+USB
AUDIO
SPDIF_OUT
SPDIF_OUT
BIOS
F_USB3
F_USB4
PCIE_X1_2

2 M2N68-LA (Narra 3)
2. Central Processing Unit (CPU)
2.1 Overview
Themotherboardcomeswitha940-pinAM2socketdesignedfortheAMDAthlon™
64/ Athlon™64 X2/Sempron™Rev F/Rev G 89W processor.
2.2 Installing the CPU
ToinstallaCPU:
1. Locate the CPU socket on the motherboard.
Makesurethatthesocketleverislifteduptoa90ºangle;otherwise,theCPU
willnottincompletely.
2. Unlock the socket by pressing the
leversideways,thenliftituptoa
90ºangle.
TheAM2sockethasadifferentpinoutfromthe940-pinsocketdesignedforthe
AMD Opteron™processor.MakesureyouuseaCPUdesignedfortheAM2
socket.TheCPUtsinonlyonecorrectorientation.DONOTforcetheCPUinto
the socket to prevent bending the connectors on the socket and damaging the
CPU!
Socket lever
M2N68-LA
M2N68-LA CPU Socket AM2

M2N68-LA (Narra 3) 3
3. Position the CPU above the socket
suchthattheCPUcornerwiththe
gold triangle matches the socket
corner with a small triangle.
4. CarefullyinserttheCPUintothe
socketuntilittsinplace.
Gold triangle
Small triangle
5. WhentheCPUisinplace,push
downthesocketlevertosecurethe
CPU.Theleverclicksonthesidetab
to indicate that it is locked.
6. Install a CPU heatsink and fan
followingtheinstructionsthatcame
with the heatsink package.

4 M2N68-LA (Narra 3)
3. System memory
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followinggureillustratesthelocationoftheDDR2DIMMsockets:
3.1 Memory congurations
Youmayinstall256MB,512MB,and1GBDDR2SDRAMDIMMsintotheDIMM
sockets.
M2N68-LA
M2N68-LA 240-pin DDR2 DIMM sockets
XMM1
XMM2
XMM3
XMM4
• Alwaysuseidentical (thesametypeandsize)DDR2DIMMpairsfordual
channelmode.Foroptimumcompatibility,werecommendthatyouobtain
memorymodulesfromthesamevendor.
• Thismotherboarddoesnotsupportdouble-sided16-bitDDRDIMMs.

M2N68-LA (Narra 3) 5
3.2 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.
• 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.
• TheDDR2DIMMsocketsdonotsupportDDRDIMMs.DOnotinstallDDR
DIMMs to the DDR2 DIMM sockets.
3.3 Removing a DIMM
ToremoveaDIMM:
1. Simultaneouslypresstheretaining
clipsoutwardtounlocktheDIMM.
2. Remove the DIMM from the socket.
SupporttheDIMMlightlywith
yourngerswhenpressingthe
retainingclips.TheDIMMmight
getdamagedwhenitipsout
with extra force.
1
2
1DDR2 DIMM notch
ToinstallaDIMM:
1. Unlock a DIMM socket by
pressing the retaining clips
outward.
2. Align a DIMM on the socket
suchthatthenotchontheDIMM
matches the break on the socket.
3. Firmly insert the DIMM into the
socketuntiltheretainingclips
snap back in place and the
DIMM is properly seated.
Unlocked retaining clip
DDR2 DIMM notch
1
2
3
1

6 M2N68-LA (Narra 3)
4.3 PCI slots
ThePCIslotssupportcardssuchas
aLANcard,SCSIcard,USBcard,
and other cards that comply with PCI
specications.ThegureshowsaLAN
card installed on a PCI slot.
4.1 PCI Express x16 slot
ThismotherboardsupportsPCI
Express x16 graphic cards that comply
withthePCIExpressspecications.
Thegureshowsagraphicscard
installed on the PCI Express x16 slot.
4. Expansion slots
4.2 PCI Express x1 slot
ThismotherboardsupportsPCI
Expressx1networkcards,SCSIcards
and other cards that comply with the
PCIExpressspecications.Thegure
shows a network card installed on the
PCI Express x1 slot.