AMD Socket AM2+ Quad Core AMD Processor SB750 - Manual (Page 22)

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(14)Coaxial SPDIF_OUT and optical SPDIF_OUT connectors:
SPDIF_OUT1/ SPDIF_OUT2
The SPDIF output is capable of providing digital audio to external speakers or
compressed AC3 data to an external Dolby digital decoder. Use this feature only when
your stereo system has digital input function. The board has coaxial and optical
SPDIF_OUT connectors.
2-6-2 Headers
(1) Line-Out/MIC Header for Front Panel (9-pin): AUDIO1
These headers connect to Front Panel Line-out, MIC connector with cable.
(2) USB Port Headers (9-pin): USB1/USB2/USB3
These headers are used for connecting the additional USB port plug. By attaching an
option USB cable, your can be provided with two additional USB plugs affixed to the
back panel.
USB Port Headers
Pin 1
USB
VC
C
-
DA
TA
GN
D
+D
AT
A
VC
C
OC
-
DA
TA
GN
D
+D
AT
A
（3)Speaker connector: SPEAK
This 4-pin connector connects to the case-mounted speaker. See the figure below.
(4) Power LED: PWR LED
The Power LED is light on while the system power is on. Connect the Power LED
from the system case to this pin.
(5) IDE Activity LED: HD LED
This connector connects to the hard disk activity indicator light on the case.
(6) Reset switch lead: RESET
This 2-pin connector connects to the case-mounted reset switch for rebooting your
computer without having to turn off your power switch. This is a preferred method of
rebooting in order to prolong the lift of the system’s power supply. See the figure
below.
L in e-O ut, M IC H ead ers
AU D IO
P in 1
L
ineout
2-L
L
ineout
2-R
Sense
-FB
Au
dio-G
ND
LIN
E2-JD
Audio
-JD
2
9
10
KE
Y
MIC
2-L
MIC
2-JD
MIC
2-R