I used the product to extend the security mouse about 12ft and it worked fine. I bought the same product to extend my install to about 50 feet. It didn't work at all, the light on the mouse worked but didn't show up on the screen and was unusable. I was more concerned about the video extender (a different device) as the previous system had a 12ft HDMI extender but worked with the same 50ft video extender. Can't complain about the price, I was just guessing because the video worked, the mouse worked too. I think the item I received was defective.