Serial (select models only)
Pin Signal
1 1 Data carrier detect
2 Received data
3 Transmitted data
4 Data terminal ready
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator
Universal Serial Bus
Pin Signal
1+5 VDC
2Data
3 Data +
4 Ground
Serial (select models only) 185
