Hello @bitracer
We used to offer a mounting kit for the TV-Box UHD and the Swisscom Box 21, but they didn't meet the expected success, that's why we decided to no longer support such an approach.
TV-Box 5 is super small and light. Customers need some creativity and they will find a solution to mount them (e.g. velcro) 😉
Please keep in mind that the device isn't designed to be mounted vertically behind a TV. The WiFi and Bluetooth performance for the remote control might be impacted in a negative way.
Have a nice afternoon