2nd controller doesn't work... but does?

[teknomedic]

I have two 2.4ghz 8bitdo M30 controllers.

I plugged both in and booted up. One works perfectly. Can move around in menus, set buttons for cores, play games, etc. Never had to do anything to make it work... It simply does.

The other one can't move around in menus. When I attempt to use in a game or core is gives an error about not being defined. With MiSTer on... if I unplug and replug the 2nd controller's dongle... then it works fine and can be used as a player 2.

Power off the MiSTer and I'm back to square one. 2nd controller won't work until I unplug, replug while MiSTer is running while the other one always works.

Both are plugged into the USB 2.1 board. I'm using a 6a,5v PSU powering both my MiSTer and USB baord with digital I/O. I've also got a separate powered USB hub that has my 5TB hard drive attached which is plugged into the USB board which solved all my previous hard drive/controller issues.

Thoughts?