RS232 serial connections support a large variety of connector types. The modular Cat5 RJ45 connector that is employed extensively for Ethernet cabling is also used as a serial data connector by network equipment manufacturers such as Cisco. Cat5 RJ45 serial connections enable the use of straight-through CAT5 or CAT6 patch cables as serial cables when used with a DB9-to-RJ45 converter to connect the Cat 5 patch cable to a PC serial port.

Applications Include:
Telecom/D-Sub Conversion
RS-232
RS-485
Data Networking

Pinouts for Cisco Switchers and Routers:
DB9 pin 8 – RJ45 pin 1
DB9 pin 6 – RJ45 pin 2
DB9 pin 2 – RJ45 pin 3
DB9 pin 5 – RJ45 pin 4
DB9 pin 3 – RJ45 pin 6
DB9 pin 4 – RJ45 pin 7
DB9 pin 7 – RJ45 pin 8