I do not have the unit yet so don't know what it even looks like from the back side (why no pics on your website GRT??)
Thanks!
Uh, it took me all of two minutes on the GRT web site to find a drawing of the backside. It shows a connector labeled DB-15, male.
Can't remember if the mini 15 uses standard or high density pins, but believe the latter. Digi-key should have recommended pins on the page.