Just bought a 6040 2.2kw machine that doesn't connect via Serial or USB, seems the only way is to use the MicroSD card to load in jobs. I can read the card and open GCode files but getting an error when trying to run any of the files. Keeps activating the Reset button. Of cause no documentation was sent with the machine and very limited information googling it. Hoping someone else might have a similar control box and offer their experience?