A flat backing mount for the Vive base station wall mounts to enable them to be stuck to the wall with 2 large size 3M command strips.
The tolerances are very tight, so that the base station is secure. You will probably struggle to fit the backing plate to the wall mount, but once it has snapped in place it is very secure.
To fit the backing plate work the center part in first then line up the screw tabs and press it in to place on a table.
The two little tabs for the screw holes are shaped to snap in and remain there. You need to break at least one of these tabs to remove the backing plate.