Received different product than pictured. What I received has two USB ports, presumably to provide enough power, but I don't know for sure. Instructions are not included. It's very finicky and will crash if not pasted "just like that". I can't tell if there's a short or open somewhere in the line, or where any of the USB ports are connected. It doesn't matter what looks like poor design, poor build quality, or a combination of both. Will be returned.