You need to get a compatible controller: See https://docs.openbuilds.com/blackbox and rewire the machine to use it.
so you are saying there is no way to connect otherwise? i am really a race-car driver, not a race-car mechanic....
Thery say: So, yes, if you want our software instead, you need a Grbl based controller, like the BlackBox
Sainsmart- maybe others too- sell a $50 "Genmitsu grbl control board" for that machine. No idea how well it works, compared to something like the BlackBox- really depends on the quality of the drivers that come with the machine, I suppose. Doesn't look like it includes drivers, so I guess it's basically an Arduino Uno with the Genmitsu connectors and aesthetic. Not sure I'd try to dive too hard into hobby CNC without at least some interest in wrenching on stuff though; you really need to be mechanically inclined and have an eye for code and how programs work. If not, the frustrations can mount up fast- not much plug'n'play about this arena.