Asus P4B manual 25

2.3Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.

1. Unplug the power cord from the wall socket before touching any component.

2.Use a grounded wrist strap or touch a safely grounded object or to a metal object, such as the power supply case, before handling components to avoid damaging them due to static electricity.

3.Hold components by the edges and do not to touch the ICs on them.

4.Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component.

5.Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components.

When lit, the green LED (LED1) indicates that the system is ON, in sleep mode, or in soft-off mode, a reminder that you should shut down the system before removing of plugging in any motherboard component.

The red LED (WARNING) is a smart protection from motherboard burn out caused by an incorrect AGP card. If you plug in any 3.3V AGP card into the 1.5V AGP slot, this LED lights up thus preventing the system to power up. This LED remains off if you plug in a 1.5V AGP card.

(This feature is present on PCB R1.05 or later versions.)

		WARNING
		ON	OFF
		Incorrect	Correct
	P4B	AGP Card	AGP Card
			LED1
		ON	OFF
P4B Onboard LED		Standby	Powered
		Power	Off
Figure 2-3	Onboard LEDs

ASUS P4B motherboard user guide 2-3