Its a USB-Box for Ender 6.
I've connected a 30cm panel mount USB cable - B Female to Micro-B Male to the motherboard (e.g. https://www.amazon.it/gp/product/B08GPMKZNG/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1). The cable passes between the bottom cover and the frame towards the front of the printer. B Female fits inside the box. Female connector size is not standard: it may be necessary to adapt the size of the internal supports according to the chosen model.

The box can be mounted by partially overlapping the bottom right corner trim bracket by using a M3x12 screw and a T-nut

No

No

200

30