Asus P4B266 - Manual (Page 44)

2-22 Chapter 2: Hardware information
7. VCORE over-voltage (3-pin OVER_VOLT)
When enabled, this jumper allows a CPU Vcore setting range of
+1.75V to +2.1V for Pentium 4 Willamette processor, and a 1.50V to
1.75V range for Northwood processor through BIOS Setup. When
disabled, the allowed Vcore settings are lower.
Setting to a very high core voltage may cause permanent damage to
the CPU. It is recommended that you keep the default setting
(Disable).
8. Line out selector (two 2-pin LO_L, LO_R) (on audio models only)
By default, these jumpers are shorted (jumper caps on) to route the
signal from the audio controller to the rear panel Line Out jack to make
it available for audio out devices such as speakers or a headphone. If
you connect the Intel Front Panel audio cable to the IAPANEL
connector (see page 2-31 for the location), remove the caps from
these jumpers to allow automatic switching of audio signal between the
rear panel Line Out jack and the Intel audio cable.
P4B266
®
ENABLE
(Default)
1
2
DISABLE
2
3
OVER_VOLT
P4B266 OVER_VOLT Setting
P4B266
®
P4B266 Internal Line Out Connectors
LO_L
LO_R
BLOL
FLOL
BLOR
FLOR