The RJ45 to DB9 console cable is a fit for Cisco part numbers: CAB-CONSOLE-RJ45 and 72-3383-01. 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. 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. And the flexible flat ribbon cable turns corners easily, so you can fit it between tight spaces such as through walls without snags or behind desks with little issues.