I used them when I was in college to try and "borrow" the faster internet connection from our computer center, worked find for me then, but I was only using 10Mbps max. so I don't know how they work performance wise, I would imgagine if you had a extender every 3 meters for 100 meteres, you would have problems. But justing using one woudln't be an issue, no different the using patch panels