15
2-6-3 Internal Headers
(1) Line-Out/MIC Header for Front Panel (9-pin): JAUDIO1
These headers connect to Front Panel Line-out, MIC connector with cable.
Pin 1
Lin
eou
t2
-L
Lin
eou
t2
-R
S
ens
e-
F
B
A
u
dio
-G
ND
LI
NE
2-
J
D
Au
d
io
-J
D
2
9
10
KEY
MI
C
2
-L
M
IC2-
J
D
MI
C
2
-R
(2) SPDIF Out header(2-pin): HDMI_SPDIF1
This header provides S/PDIF digital signal transmission. Please connect it to
certain expansion card (graphics card or sound card) with an S/PDIF digital
audio cable.
Pin1
GN
D
HD
M
I_
S
PD
IF
_
O
U
T
(3) Serial Port header (9-pin): COM1
COM1 is a 9-pin RS232 connector.
DC
D
Pin1
Pin2
SO
U
T
G
ND
RT
S
RI
SI
N
DT
R
DS
R
CT
S
(4) Speaker header: SPEAK1
This 4-pin header connects to the case-mounted speaker. See the figure below.
(5) Power LED header: PWR LED1/PWRLED
The Power LED is light on while the system power is on. Connect the Power
LED from the system case to this pin.
(6) Hard disk activity LED: HD LED
This header connects to the hard disk activity indicator light on the case.