Remixed playfellow_s https://www.printables.com/model/453059-anbernic-rg351p-skadis-mount to include mounting holes for https://www.printables.com/model/152592-honeycomb-storage-wall and also turned and angled it to use less space.
Uses M3 countersunk screws to attach to remixed insert(s) that is also included with the files. You can use a non-countersunk screw on the lower hole as long as the screw cap diameter is 6.5mm or under. Unfortunately you need a long bit or screwdriver to attach the lower insert because of the deep hole.
STEP file included.
The author remixed this model.