AOpen AK79GMAX User Manual
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Hardware Installation

This chapter describes jumpers, connectors and hardware devices of this motherboard.

Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and other components. Always observe the following precautions before you install a system component.

1.Do not remove a component from its protective packaging until you are ready to install it.

2.Wear a wrist ground strap and attach it to a metal part of the system unit before handling a component. If a wrist strap is not available, maintain contact with the system unit throughout any procedures requiring ESD protection.




JP14 Clear CMOS Data

You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedures below.

1.Turn off the system and unplug the AC power.

2.Remove ATX power cable from connector PWR2.

3.Locate JP14 and short pins 2-3for a few seconds.

4.Return JP14 to its normal setting by shorting pin 1 & pin 2.

5.Connect ATX power cable back to connector PWR2.

Pin 1



Tip: When should I Clear CMOS?






Boot fail because of overclocking…

Normal Operation

Clear CMOS


Forget password…





3. Troubleshooting…


AK79G MAX/AK79D MAX OOnnlliinnee MMaannuuaall

CPU Installation

This motherboard supports AMD® Athlon and Duron Socket 462 series CPU. Be careful of CPU orientation when you plug it into CPU socket (withCPU Overheat Protection function implemented, the system will be automatically power off when the temperature of CPU reached 97 degree, but works on AthlonXP CPU only).

1.Pull up the CPU socket lever and up to 90-degreeangle.

2.Locate Pin 1 in the socket and look for a black dot or cut edge on the CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into the socket.

CPU socket


CPU pin 1 and cut edge

Black dot and cut edge

Note: This picture is for example only; it may not exactly be the same motherboard.




3.Press down the CPU socket lever and finish CPU installation.

CPU cut edge

Note: If you do not match the CPU socket Pin 1 and CPU cut edge well, you may damage the CPU.

Note: This picture is for example only; it may not exactly be the same motherboard.




AOpen Overheat Protection (O.H.P.) Technollooggyy

With AMD platform substantially keeps increasing the speed of its CPU, it inevitably led to the annoying problem of high CPU operation temperature at the same time. In order to prevent accidental failure of CPU fan, which could cause the burning down of the AthlonXP CPU, we, AOpen, have meticulously developed a new technology, named, O.H.P. (Overheat Protection) Technology to protect them. Thanks to the intelligent monitoring design of AOpen O.H.P. technology, user can now finally set their mind at ease even when fan failed to work without fearing the possible damage of CPU.

Under the circumstances that CPU fan is running properly, AthlonXP temperature should be way below the highest temperature limit of 97 . However, if CPU fan accidentally becomes malfunction or improperly installed, the CPU temperature would rocket abruptly, and you may find your system hang up or crying over the smoking CPU if you haven’t installed AOpen O.H.P. previously. With AOpen O.H.P. technology applied, the specific thermal detection pins on AthlonXP CPU would sense voltage difference when processor is overheated with fan failed, and the overheat protection system would immediately send out a signal to abort your system by cutting CPU electricity before any damage is done. Unlike other manufacturers who use BIOS or software to control the power supply of CPU, AOpen O.H.P. Technology is purely hardware-controlledthe minute after systemboot-up,and occupies no system resource. We are pleasant to phase in this practical function on all AOpen AMD series motherboards to protect customer’s valuable hardware and personal data.