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The P4X4-ALH Mainboard
Page 24
2.9.4. JP8: Check 1.5V AGP (otional)
Type: 2 pin
Default: Open
This jumper can be used to check if your AGP card is 1.5V or 3.3V. If you open
this jumper then the system will check to see what type of AGP card you are
using. If a 3.3V card is detected your system will not boot.
Note: The jumper must be made Open after the AGP card has been inserted
into the slot. If this jumper remains Short the system will boot with both a
1.5V and 3.3V AGP card.
Warning: if you are using a 3.3V AGP card you may damage your system.
2.9.5. JP9: Clear CMOS
Type: 3 pin
Default: Pin 1 and Pin 2 Short
If you have made an improper setting in the BIOS setup and your computer is
not functioning, or if you have forgotten your password, you can use this
jumper to clear the CMOS memory and to reconfigure your system.
To clear the CMOS, please follow these instructions:
1. Turn the system power off and unplug your computer;
2. Insert the jumper cap on Pin 2 and Pin 3 for 3 ~ 5 seconds;
3. Pull out the jumper cap and replace it on Pin 1 and Pin 2;
4. Turn your PC on and run the BIOS setup program.
Hardware Installation