HP and Compaq Desktop PCs - Motherboard Specifications, M2N68-LA (Narra6L)
Figure 1: The M2N68-LA (Narra6L) motherboard
Processor upgrade information
Socket type: AM3
TDP: 95 watt
Motherboard supports the following processor upgrades:
AMD Phenom II X4 9xx/9xxe/8xx Quad-Core (Deneb)
AMD Phenom II X3 7xx/7xxe Triple-Core (Heka)
AMD Phenom II X2 5xx (Callisto)
AMD II Athlon X4 6xx/6xxe (Propus)
AMD II Athlon X3 4xx/4xxe (Rana)
AMD II Athlon X2 2xx/2xxe (Regor)
AMD Sempron 1xx (Sargas)
Memory upgrade information
Dual channel memory architecture
Two DDR3 DIMM (240-pin) sockets
Supported DIMM types:
PC3-8500 (DDR3-1066)
PC3-10600 (DDR3-1333)
Non-ECC memory only, unbuffered
Supports 2GB DDR2 DIMMs
Supports up to 4 GB* on 32 bit PCs
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NOTE:
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*32-bit operating systems cannot address a full 4.0 GB of memory. |
Video
Integrated graphics using nVidia GeForce 6150SE
*Integrated video is not available if a graphics card is installed.
Audio
Integrated Realtek ALC888S Audio
*Integrated audio is not available if a sound card is installed
Network
LAN: 10-Base-T
Interface: Integrated into motherboard
Technology: Realtek RTL8201N
Data transfer speeds: up to 10/100 Mb/s
Transmission standards: 10-Base-T Ethernet
Expansion Slots
One PCI Express x16
Two PCI Express x1
One PCI
I/O Ports
Back I/O ports
Figure 2: Back I/O panel
1 - Video Graphics Adapter
2 - USB 2.0: 4
3 - RJ-45 Network (LAN)
4 - Audio: Line In (light blue)
5 - Audio: Line Out (lime)
6 - Audio: Microphone (pink)
Internal Connectors
One CPU fan connector
One 24-pin ATX power connector
One 4-pin ATX power connector
One ROM recovery connector
Four SATA connectors
One ROM recovery connector
One jumper for resetting BIOS settings
One jumper to clear the BIOS password setting
One system panel connector
One AC Power Loss Restart Selector
Four USB headers, supporting 6 USB connections
One S/PDIF out connector
One Front audio connector for headphone and microphone
One chassis fan connector
Motherboard layout
Figure 3: layout
Clearing the CMOS settings
| CAUTION:
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Do not change any jumper setting while the computer is on. Damage to the motherboard can result.
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To clear CMOS, follow these steps:
Temporarily set jumper Clear CMOS to pins 1-2.
Wait 5-10 seconds and then return the jumper to pins 2-3.
You may now restart the PC.
Clearing the BIOS password
The BIOS password is used to protect BIOS settings from unwanted changes. If you have forgotten your password you may disable password checking.
To erase the BIOS password follow these steps:
Turn OFF the computer and unplug the power cord.
Locate the jumper labeled Clear P.W.
Move the jumper on jumper Clear P.W. to pins 1-2.
Wait approximately 10 seconds and then return the jumper to pins 2-3.
Plug in the power cord and turn ON the computer.
SPI header
This connector allows qualified technicians to reload firmware into the SPI boot flash in case there is problem with the data.
This jumper should not be changed.
The ROM Recovery Header on the motherboard.
The header is labeled SPI_Header.
SPI Header chart.
AC Power Loss Restart Selector - NJ18 Header
The NJ18 jumper allows the user to set whether or not to start the PC after power interruptions.
If the jumper is set in the [Disabled] configuration the selector leaves your PC off. If the jumper is set in the [Enabled] configuration the selector starts the PC.
The NJ18 jumper on the motherboard.
NJ18 Header chart.
Printable version
