1 - empty
2 - yellow
3 - black
4 - orange
5 - green
6 - brown
7 - blue
8 - white
9 - empty
Put two of these back to back with a rolled over rj45 serial cable and you have a null modem cable. one of them and you have a Cisco console cable... Put on the end of a 8 port hydra and plug directly into the console of a pc.