This product works and the seller replied when I had the initial issue of not managing to get it working with my switch. With the Nintendo switch I needed to power it with an external USB 3.0 plug. Apparently it says it in the description however I can't read kanji. I'm just giving it 4 stars as I did need to get an external power supply separately, it arrived a day late even though I chose a delivery slot and the huge logo on the front of it kind of annoys me.