1 & 2 are good, 3 is not used unless you are connecting a programmer.
I've never used a 32U4 based board, I don't know if you need to install a driver for it.
1 & 2 are good, 3 is not used unless you are connecting a programmer.
I've never used a 32U4 based board, I don't know if you need to install a driver for it.