PC Related Pin Outs

Pin Outs for Various PC Related Connectors

Serial Port

9 Pin Male

25 Pin Male

   2.    TD
   3. RD
   4.    RTS
   5.    CTS
   6.    DSR
   7. GND
   8.    DCD
   20. DTR
   22. RI

For very detailed information about all aspects of the PC Serial port, click here

Parallel Port

For very detailed information about all aspects of the PC parallel port, click here

RJ-45 Networking Cables

Click here for details of RJ-45 connector wiring. Thanks to Mithrandir for producing this information.