Asus P4B266-E - Manual (Page 46)

2-22 Chapter 2: Hardware information
9. VCORE over-voltage (3-pin OVER_VOLT)
When set to Normal, this jumper allows CPU Vcore ranges of 1.75V to
1.85V for Pentium 4 Willamette and 1.5V to 1.7V for Northwood.
When set to Over Voltage, Willamette will have a Vcore setting range
of +1.75V to +2.1V, and Northwood 1.50V to 1.75V. You may adjust the
CPU VCore through the BIOS Setup. See page 4-16 for more
information.
Setting to a very high core voltage may cause permanent damage to
the CPU! It is recommended that you keep the default setting (Normal).
8. Speaker selector (3-pin SPEECH)
This jumper allows you to select the speaker you wish to use for the
ASUS POST Reporter™ function. Set to pins 1-2 to use the internal
speaker (usually included in the chassis). Set to pins 2-3 if you
connected an external speaker to the Line Out jack (lime color) on the
rear panel.
P4B266-E
®
P4B266-E Speaker Selector
SPEECH
LINEOUT BUZZER
(Default)
1 2 2 3
P4B266-E
®
OVER_VOLT
P4B266-E OVER_VOLT Setting
Over Voltage
2
3
(Default)
1
2
Normal