Asus P4B-M 3.Keyboard power (3-pinKBPWR), ASUS P4B-Mmotherboard user guide, 2.USB port selection (3-pinCNRUSB0, CNRUSB1)

2.USB port selection (3-pin CNRUSB0, CNRUSB1)

When set to pins 1-2, these jumpers allow you to activate USB port 3. Setting the jumpers to pins 2-3 activates the CNR slot. Both jumpers are set to pins 1-2 by default.

The USB port 2 is always active regardless of the settings of these jumpers.

CNRUSB0

CNRUSB1

P4B-M

1	2	2	3
Use External USB Ports		Use CNR USB
(Default)

P4B-M USB/CNR Selection

Figure 2-24 USB Port Selection

3.Keyboard power (3-pin KBPWR)

This jumper allows you to enable or disable the keyboard wake-up feature. Set this jumper to pins 1-2 (+5VSB) if you wish to wake up the computer when you press a key on the keyboard (the default is the Space Bar). This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS (see section 4.5.1 Power Up Control). The default is setting is on pins 1-2 (+5V).

	KBPWR
2	3
	2
1

+5V+5VSB (Default)

P4B-M

P4B-M Keyboard Power Setting

Figure 2-25 Keyboard Power Settings

ASUS P4B-M motherboard user guide 2-19