Bought one of these a few months ago. Works great. I have practically my entire house wired for gigabit LAN, but my wife felt the need to move her desktop PC to the once place I hadn’t pulled cable. It bought me a few months of time. I put in another drop last week and am not using this anymore, but it did work great, better than I expected.
Some people buy to hook up media devices to a network. If it’s compatible with a WDTV or something like that is why I have 2. Not these but USB dongles in general.