The Elegoo Mars SLA Printer runs off a USB Thumb Drive and it is located in the rear of the machine. This bracket houses a USB extension cable that is attached to the left side of the printer housing using existing screw locations.

Only thing needed besides the print, are the following:
2 x M3x8 Flat Head Socket Screws
1 x USB Extension Cable (Specific to links beloiw)

3 Pack of USB Extensions
https://www.amazon.com/Cable-Matters-3-Pack-Extension-Extender/dp/B00N9HRTFU/ref=sr_1_5?keywords=cable+matters+usb+extension&qid=1562614217&s=gateway&sr=8-5

Make sure when connecting the cable to the USB on the rear of the unit, cut back about 5mm of the plastic case around the male side of the usb extension, this will alow the usb to seart further in and ensure a solid connection.