Hardware Installation

2.9. Jumper Settings

Jumpers are built on the mainboard to allow the user flexibility to configure the mainboard settings to meet their specific requirements. The mainboard comes with five jumpers, three 3-pin and two 2-pin jumper. 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 are examples of short set- tings or open settings on a jumper.

Two-Pin Jumper

Three-Pin Jumper

PIN:

1

2

3

PIN:

1

2

3

Open

Short

SHORT

Pin 1/Pin 2

Pin 2/Pin 3

2.9.1. JP1: Keyboard Power

 

Type:

3 pin (K/B Power)

 

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 Wakeup” 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 Power Manage- ment Setup - IRQ/Event Activity Detect Menu of the BIOS setup.

2.9.2. JP3: USB1, USB2 Power

Type: 3 pin

Default: Pin 1 and Pin 2 Short

This jumper allows you to select the voltage that is supplied to USB1 and USB2. You have two choices: 5 V (pin 1 and pin 2 short) or standby 5 V (pin 2 and pin 3 short). Some USB devices may not follow the standard USB power specifications. If you are using such a device it may unstable. If you do experi- ence problems try to change the setting on Pin 2 and Pin 3. This might help solve this problem.

2.9.3. JP5: CPU Clock

Type: 2 pin

Default: Short

If this jumper is short, the mainboard will automatically detect the CPU clock speed FSB 400 MHz or 533MHz. If this jumper is open then the FSB will be forced to be 533 MHz.

The P4X4-ALH Mainboard

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Microsoft P4X4-ALH manual Jumper Settings, Two-Pin Jumper, 1. JP1 Keyboard Power Type, 2. JP3 USB1, USB2 Power Type 3 pin