RJ45 to RS232 Cable DB9 9-Pin Serial Port Female to RJ45 Male Cat5 Ethernet LAN Console Cable Switch Cable Compatible with Cisco Router Switch. This switch cable can be used to switch to the RS232 serial port. The DB9 9-pin serial port is used to connect a host computer or various monitors. DB9 to RJ45 debugging line,used for switches, access points, router debugging and configuration data transmission, compatibility, stability, supports all computer operating systems The low cost replacement cord connects your computer's serial port to the RJ45 console port on your Cisco router, switch, firewall, wireless device and more, for reprogramming and updating compatible equipment and devices 9 pin DB-9 to RJ-45 adapter is built with copper conductors for efficient, lag-free transmission of data; it supports notebooks, laptop PCs and other compatible network devices. Flat serial to RJ45 cord is used in place of bulky, stiff round cables for easy cable management, to add more spare bulk to work space and still your work space will be neat, as they are easy to sort out to avoid messy tangled wires RS232 DB9 to RJ45 Cat5 Ethernet Cable.