This product works very well and has a good selection of adaptors that have fitted everything I have tried so far. I thought the unit was faulty at first. Make sure to read the instruction leaflet regarding polarity. The adapter needs to be attached to match the polarity symbol on the item it is powering. It will not work otherwise, and in my case blew the fuse. If you get this right (which is very simpole) the product works fine and is a good bit of kit for the price.