I really want a good to-USB adapter for those things. I love the Wii Classic Pro controller, and now these.... I've tried two different models from Mayflash, but the first stopped working after a couple months and the second liked to trigger wild, phantom stick movement every minute or two, making it unusable. No-one else seems to make such an adapter.

Your easiest bet might be just connecting it to a wiimote and finding a wiimote HID driver and connecting it to your computer via bluetooth.

I've had trouble getting it to "remember" the Wiimotes, so I always have to do manual fiddling to get them connected. Meanwhile PS3 controllers are working great over Bluetooth, no such problems and totally painless set-up. But they're more expensive and I kind of want to use them for my PS3 instead, meanwhile I've got a couple Classic Pro controllers that are otherwise unused and can pick up more on the cheap. Aside from not having rumble, which isn't a big deal to me, they're pretty much perfect—except I can't buy a reliable, durable wired adapter for them.

There's a lot of interest I would have if the controllers used the same connectors as the original OEM SNES controllers. I have no need for a Mini as I still have my SNES and nearly every game being re-released here, but I would love to get my hands on some brand new SNES controllers without having to continually refurbish my near 25-year old original ones, or refurbishing used ones.

While technically not OEM SNES, the 8bitdo repros are of extremely high quality and if you get a matching retro receiver, you can use them with the original SNES hardware (and wirelessly): http://www.8bitdo.com/snes30-sfc30/

Looks like nunchuck connectors + hidden ports on the front:

http://i.imgur.com/u7mgA4x.jpg