Argox FM201 - Manual (Page 8)

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2.2. Interface Connector
The control board to host interface signals have different definitions depending on the
operation of RS232, keyboard wedge or USB.The signals are listed as below:
Pin Signal
RS232 K/B USB
1 GND GND GND GND
2 RTS(CLK KB) RTS CLK KB X
3 RxD RxD X X
4 CTS(DATA KB) CTS DATA KB X
5 DATA PC X DATA PC DATA PC
6 CLK PC X CLK PC CLK PC
7 TxD TxD X X
8 Vcc(DC 5V) Vcc(DC 5V) Vcc(DC 5V) Vcc(DC 5V)
9 I/F I/F I/F I/F
10 Trigger X X X
11 Buzzer X X X
12 GRE_LED X X X
13 RED_LED X X X
14 NC X X X