Connecting multiple arduinos to one computer

Hello!
I was wondering, which is the best way to connect several arduino usb boards (4) to a computer running max/msp?. I need to read & write …
Using a midi interface?
Using several usb ports and several serial objects in max (one for each arduino)?
I didn’t find any post about this in the forum ? maybe I didn’t search correctly, or maybe it’s too obvious…

Thanks,
Felix