Asus P4B - Manual (Page 44)

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
®
P4B SDR Voltage Setting
SDRVOL
3.4 V 3.5 V
1 2 2 3
3.6 V
3 4
(Default)
P4B
®
P4B Speaker Selector
1
2 2
3
SPEECH
BUZZER
(Default)
LINEOUT