I have a Telehook ceiling mount that supports my TV. I recently switched from a Sony to a Samsung and the cord that plugs into the back of the TV is different on the Samsung than it is on the Sony. On the Sony, it's like the traditional PC monitor plug. That's the type of wire I have running through the ceiling so I needed this adapter to get power to the new TV. Much easier than snaking a new cord back into the ceiling.
Very sturdy construction. Love that it's only 18 inches. That's all I needed.