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RS232 null modem cable (DB25-DB25)

Use this cable between two DTE devices (for instance two computers).

D25 pin D-SUB female to PC1DB25 pin D-SUB female to PC1
DB25 pin D-SUB female to PC2DB25 pin D-SUB female to PC2

DB25-1DB25-2
Receive Data32Transmit Data
Transmit Data23Receive Data
Data Terminal Ready206+8Data Set Ready + Carrier Detect
System Ground77System Ground
Data Set Ready + Carrier Detect6+820Data Terminal Ready
Request to Send45Clear to Send
Clear to Send54Request to Send
Note: DSR & CD are jumpered to fool the programs to think that they are online.
Our software allows you monitor, log, debug and test your RS232 or COM ports.