I tested it a while ago and it's a lot weaker and slower than my laptop, half the signal strength and speed. It struggles to connect at some places in the house while my laptop works fine. Every time I wanted to upload some screenshots from Zelda it was faster to walk to the router instead of waiting for it to finally complete.
It works, it's a little weaker than the WiiU's wifi module, which was the previously weakest device in the house.