Holder compatible with the gridfinity storage system taking up 2 squares. Modelled this as I wanted a different ratio of USB to SD slots than I saw on makerworld and I wanted it to be at the same height as the storage bins I had printed. See below details of the holder:

5x USB-A Slots

4x USB-C Slots

6x SD Card Slots

5x Micro SD Slots

Feel free to modify this model based on your needs!