I didn’t see this info listed elsewhere, though admittedly I didn’t look that hard, but if you’re looking for the connectors to mate with the stepper motor connectors on your board, here’s where you can get them:
And the crimp terminal that match:
I got 30 of the housings and 100 of the crimp connectors for $14.64 delivered. They showed up in about 10 days.
And if you want a 2x7p Dupont female housing for the input pin terminal block, you can get those at pchcables.com. Their part number is DPD-207. I got a 5 pack delivered for $7.47.
Enjoy!