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F
Jumpers
Clear CMOS Setting (JP1)
JP1 is used to clear CMOS data. Clearing CMOS will result in the perma-
nently erasing previous system configuration settings and the restoring origi-
nal (factory-set) system settings.
Pin 1-2 (Default)
Pin 2-3 (Clear CMOS)
Step 1.
Turn off the system power (PC-> Off).
Step 2.
Remove ATX Power cable from ATX Power connector.
Step 3.
Remove jumper cap from JP1 pins 1-2.
Step 4.
Place the jumper cap on JP1 pins 2-3 for a few seconds.
Step 5.
Return the jumper cap to pins 1-2.
Step 6.
Plug ATX Power cable into ATX Power connector.
Step 7.
Turn on the system power (PC-> On).
1
A1
A2
BIOS Written Protection (JP3)
A3
JP3 is used to protect BIOS from abnormal writing. You may choose to place
jumper cap on pins 2-3 for BIOS written protection; however, please place
jumper cap on pins 1-2 if you need to reflash BIOS.
Pin 1-2 (Unprotected)
Pin 2-3 (Protected)
1
JP1
1
JP3
1
JP5
CPU FSB Setting (JP5)
AV42 provides jumper JP5 to configure front side bus at 400/533MHz.
Short: Auto-detect (400 or 533MHz)
Open: 533MHz
1
1
