Kensington Expert Mouse serial Cable Pinout -
computer serial port Name computer serial port Pin Direction mouse Pin mouse Name Description
CD 1 <-- 5 CD Carrier Detect
RXD 2 <-- 4 RXD Receive Data
TXD 3 --> 7 TXD Transmit Data
DTR 4 --> 6 DTR Data Terminal Ready
GND 5 --- 2 GND Ground
DSR 6 --> 1 DSR Data Set Ready
RTS 7 <-- 3 RTS Request to send
CTS 8 <-- 8 CTS Clear to Send

9 pin D-SUB female connector layout 8 pin mini-DIN male connector diagram

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