The 845D-MVT MAINBOARD
Page 21
Hardware Installation
Jumpers are built on the mainboard to allow the user flexibility to configure the
mainboard settings to meet their specific requirements. When there is no
jumper cap inserted into the jumper it is called “OPEN.” When a cap is inserted
into the jumper it is known as a “SHORT.” Below is an example of a short set-
ting on a jumper.
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SHORT PIN 1/PIN 2 PIN2/PIN 3
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Three Pin Jumpers
Open Short
Two Pin Jumpers
2.9.1. JP1: Keyboard/Mouse Power On
Type: 3 pin
Default: Pin 1 and Pin 2 short
This jumper allows you to power on your system using your mouse or key-
board. If you short Pin 1 and Pin 2 then the “Keyboard/Mouse Power On”
function will be disabled. If Pin 2 and Pin 3 are short then the “Keyboard/
Mouse Power On” function will be enabled. If you choose to enable this op-
tion then you need to enable the POWER ON field in the Integrated Periph-
erals Menu of the BIOS setup.
2.9.2. JP3: Clear CMOS
Type: 2 pin
Default: Open
If you have made an improper setting in the BIOS setup and your computer is
not functioning, or if you have forgotten your Supervisor and/or User pass-
word, you can use this jumper, JP3, to clear the CMOS and to reconfigure your
system page:
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 1 and Pin 2 for 3 ~ 5 seconds.
3.
Pull out the jumper cap and remain Pin 1 and Pin 2 open.
4. Turn your PC on and run the BIOS setup program.
2.9.3. JP4: Clear Password
Type: 3 pin
Default: Pin 1 and Pin 2 short
If you forget your keyboard power-on password you can use JP4 to clear it
from the I/O chip (where it is stored). To do this you must:
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.
