Connect your computers serial port to the rj45 console port on your cisco router the db9concabl6 6ft cisco console management cable is designed as a replacement cable for use with several cisco routers including the 600 800 1600 and 1700 series startechcoms cisco console management cable is equivalent to cisco part no cab console rj45 and air concab1200 console cable for 1130ag 1200 1230ag and 1240 platforms