Serial interfaces cables and converters scheme
Will work with LapLink from Travelling Software

DSUB9 to DSUB9 cable

Name Pin Pin Name
Receive Data 2 3 Transmit Data
Transmit Data 3 2 Receive Data
Data Terminal Ready 4 6 Data Set Ready
Signal Ground 5 5 Signal Ground
Data Set Ready 6 4 Data Terminal Ready
Request To Send 7 8 Clear To Send
Clear To Send 8 7 Request To Send

DSUB25 to DSUB25 cable

Name Pin Pin Name
Protective Ground 1 1 Protective Ground
Transmit Data 2 3 Receive Data
Receive Data 3 2 Transmit Data
Request to Send 4 5 Clear to Send
Clear to Send 5 4 Request to Send
Data Set Ready 6 20 Data Terminal Ready
Signal Ground 7 7 Signal Ground
Data Terminal Ready 20 6 Data Set Ready


9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the cable
25 pin D-SUB female connector layout
25 pin D-SUB female connector
at the cable
According to 6 reports in our database (3 positive and 0 negative) this pinout should be correct.

Is this pinout
LapLink serial cables visual pinout:
LapLink serial cables diagram
click to enlarge
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