According to @AqeeAqee ‘s github, it says this and may be why my meowbit didn’t work with GameSlots - save multi games at the same time.
F412
The F412 has a different USB module. In the
board.hyou will most likely want to add like this:#define BL_F412 1
Now, my meowbit power switch isn’t working as well now, but it isn’t a big deal.