Still gonna need a breakout to sit between the 100/300/400 and the stepper drivers.

The YongNuo USB board that comes with the black box combines the breakout and the USB interface in one board.

The 100/300/400 pretty much gives you one/five/two LPT ports at the end of an ethernet cable with some onboard timing stuff. You'll need to whack a breakout board between its digital IO and anything else to protect it against spikes and do the necessary level conversions. And you'll still need the stepper drivers.