Works exactly as you'd expect, without issue. Personally I bought this so that I had a better way to detour my shared internet connection to my Xbox 360, whilst also avoiding the unneccesary complication of a router/hub etc.
Ideal for adding length to a network cable, allowing you to simply attach two cables together. No drivers required - works out the box. Probably handy for anyone with a wired network to have a few of these lying around. Very useful.