User Guide

2-22 Chapter 2: Hardware information
7. SDRAM voltage (SDRVOL)
This jumper allows you to select the voltage supplied to the system
memory. The default setting is on pins 1-2 (3.4V).
Figure 2-28 SDRAM Voltage Settings
8. Speaker selector (SPEECH) (on audio models only)
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.
Figure 2-29 Speaker Selection Settings
P4B-LS
®
P4B-LS SDR Voltage Setting
SDRVOL
3.4 V 3.5 V
12
2
3
3.6 V
3
4
(Default)
P4B-LS
®
P4B-LS Speaker Selector
1
2
2
3
SPEECH
BUZZER
(Default)
LINEOUT