15
JP1: Clear CMOS Memory Jumper
This jumper lets you erase the system setup settings that are stored in
CMOS memory. You might need to erase this data if incorrect settings
are preventing your system from operating. To clear the CMOS memory,
turn off the system, disconnect the power cable from the mainboard, and
short the appropriate pins for a few seconds.
Function
Jumper Cap
Normal Operation
Short pins 1-2
Clear CMOS
Short pins 2-3
JP2: Keyboard Power On Jumper
This jumper lets you use a typed-in password as a power switch to turn
your system on. If you enable this property, you need to define the
password or the hot keys using the setup utility. See Chapter 3 for more
information.
Function
Jumper Cap
Disable keyboard power on
Short pins 1-2
Enable keyboard power on
Short pins 2-3
JP4: 100MHz System Bus Frequency Select Jumper
Use this 3-pin jumper to set the system bus frequency. In the normal
setting, the system automatically selects the correct frequency according
to the kind of processor installed. In the Force 100 MHz setting, the
system uses a 100 MHz system bus even if the processor is designed to
operate with a 66 MHz bus.
Function
Jumper Cap
Normal
Short pins 1-2
Force 100 MHz
Short pins 2-3
JP1
3
2
1
JP2
1 2 3
JP4
1 2 3
