Gigabyte AMD Socket 939 Processor Motherboard GA-K8NXP-SLI User Manual page 45

Power On By Mouse
Disabled Disabled this function. (Default value)
Double Click Double click on PS/2 mouse left button to power on the system.
Power On By Keyboard
Disabled Disabled this function. (Default value)
Keyboard 98 If your keyboard have "POWER Key" button, you can press the key to power on the
system.
Any KEY Press any keys on your keyboard to power on the system.
AC BACK Function
Soft-Off When AC-power back to the system, the system will be in "Off" state.
(Default value)
Full-On When AC-power back to the system, the system always in "On" state.
- 45 - BIOS Setup