Want to use external drivers with the Duet 2 Controller board? Then the Duet expansion breakout board is what you need. It is specifically designed for external drivers that require a differential signal. The Duet 2 Expansion breakout board has 5 steppers channels with the following outputs: Step+, Step-, Dir+, Dir-, En+, En-. In addition to the drivers it also breaks out heater 6 and 7 signals to 5V.
The Duet 2 Expansion breakout board comes with Molex KK compatible connectors and crimps as well as a 50way IDC Cable to provide the connection between the Duet and Duet expansion breakout board.