Thank you, but I'm trying to figure out if I need anything additional to attach the 8bitdo's dongle to the NES Classic, being that the NES Classic uses the Wii-style connectors and I'm guessing the 8bitdo is designed for USB.
Ah sorry if I was not clear enough but that link & dongle is specifically for use on the Nes Classic.
Edit: Also my mistake on presuming one dongle supports two controllers. It seems I would need to purchase an additional controller & dongle to use two controllers simultaneously.