7
No.
Function
No.
Function
No.
Function
1
+12V/1A output
5
Audio output
9
VGA line sync
2
Ground line
6
VGA_B
10
VGA line sync
3
VGA_G
7
VGA_R
-
-
4
RXD_232
8
TXD_232
-
-
2.2.3.3
EXTEND port
EXTEND port
Name
Function
+5
USB +5V (upper line)
+5
USB +5V (upper line)
-
USB data- and USB data+ that connect to USB port.
+
IO
Reserved, used for expand customization.
+12
+12V/1A output.
Ground
VO
AV video output
RX
RS-232 serial port sender and receiver that connects to RS-232 port
TX
2.2.3.4
Voice talk port
Voice talk port
Name
Function
+12
+12V output
Ground
Mic In that can connect to microphone.
Mic Out that can connect to earphone.
SPK+
Speak positive pole