SMC Networks P4B-E Figure, LAN Settings, 11.VCORE over-voltage(OVER_VOLT), Figure 2-32CPU Core Voltage Settings, 12.LAN setting (3-pinLAN_EN) (on LAN models only)

11.VCORE over-voltage (OVER_VOLT)

When enabled, this jumper allows a CPU Vcore setting range of +1.75V to +2.1V for P4 Willamette processor, and a 1.475V to 1.75V range for Northwood processor through BIOS Setup. When disabled, the allowed Vcore settings are lower. (This function is available on PCB R1.03 or later versions.)

Setting to a very high core voltage may cause permanent damage to the CPU. It is recommended that you keep the default setting (Disable).

	OVER_VOLT
	2	3
		2
	1
P4B-E	Disable	Enable
	(Default)

P4B-E OVER_VOLT Setting

Figure 2-32 CPU Core Voltage Settings12.LAN setting (3-pin LAN_EN) (on LAN models only)

This jumper allows you to enable or disable the onboard Local Area Network (LAN) feature. Keep the default setting Enabled if you wish to connect your computer to a network.

LAN_EN

	1 2	2 3
P4B-E

Disabled Enabled

(Default)

P4B-E LAN Setting

Figure 2-33 LAN Settings

2-24 Chapter 2: Hardware information