Marlin 2.x is not running well anymore on old MEGA2560 boards, so I decided to get my UM2 up and running again with new hardware.
This case is made to use the bores of the spool holder in the back so you don't have to drill anything in this beautiful case. My spool holders are mounted from the side, so I don't use this holes anyways.
This does fit an SKR 1.3/1.4 and a Raspberry Pi 3 / 4. It is not really necessarily to use a cooling fan as there is no heat-issue using TMC2209. As on my fault I was running this case without cooling for a couple of days printing without ever having issues with my SKR Board or the Raspberry Pi.
As 5V / 12V buck down converter this case is prepared for two generic LM2596 driver.
To use the stock 24V MeanWell power supply you will need an KPJX-PM-4S-S which you will have to mount with 2.5mm tapered wood screws.
To mount the holder inside the UM2 you will need some M3x4 knurled screws.