An adapter to allow a Creality 4.2.7 board to be mounted in a CR-10 v2 in place of the original 2.5.2 board.

It slips over the mounting posts that held the original 2.5.2 board. I used the original M3 screws with added washers to secure the adapter in the control box and used M3-8 screws to mount the 4.2.7 board to it. You need to mount the adapter in the control box before attaching the 4.2.7 board or you'll have problems with the USB connector. 

In my CR10 v2 it lines up the USB and SD card with the original holes. The extra space didn't bother me so I didn't make anything to fill it in.

It doesn't have any particular printing requirements.