User`s manual

19
2-6-2 Headers
(1) Serial Port COM3/ 4 Header (9-pin) : COM3 (CN26), COM4 (CN27)
COM3/ 4
Pin 1
Signal Pin Signal
DCD 1 2 RxD
TxD 3 4 DTR
GND 5 6 DSR
RTS 7 8 CTS
RI 9 10 NC
Serial Port 3/ 4 COM3/4 Header
*
COM 2, COM3 and COM4 pin 9 signal can be select as ring in, +5V or +12V.
2) Audio Header (9-pin): AUDIO (CN29)
This header connects to Front Panel Line-out, MIC connector with cable.
(3) USB Port Headers (9-pin): USB 5/ 6 (CN18) and USB 7/ 8 (CN19)
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.
U
SB Port Headers
Pin 1
USB5/6
VCC
-DATA
GND
+DATA
VCC
NC
-DATA
GND
+DATA
(4) External PC-speaker connector: SPEAKER (CN32)
This 2-pin connector connects to the case-mounted speaker. See the figure below.
Signal Pin Signal
Line Out R 1 2 Line Out L
GND 3 4 GND
Line In R 5 6 Line In L
Mic In 7 8 Mic VRef
NC 9 10 NC
Signal Pin Signal
VCC 1 2 VCC
DATA- 3 4 DATA-
DATA+ 5 6 DATA+
GND 7 8 GND
NC 9 10 Key
Audio Headers
AUDIO
Pin 1
Line Out R
Mic VRef
GND
Line In R
Mic In
Line Out L
N/C
Line In L
GND
2
9 10
N/C
SPEAKER
Pin 1
+5V
Spk