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7
2.2.3.3 EXTEND port
EXTEND port
Name Function
+5 USB +5V (bottom 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 External pickup port
External pickup port
Name Function
+12 +12V output
Ground
Audio input for external hand microphone.
Audio output for external hand microphone.
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