@MM-Hans

1. The rear shell of 13.3inch Magic Mirror has square M3 fixing holes, allowing you to fix it in both landscape and portrait mode.
   
2. You can consider using the built-in battery to solve this problem. If conditions permit, we will release models with batteries in the future;
3. At present, the backlight brightness can only be adjusted through the OSD menu. At present, the CM4 core board has been released. We are working on the CM4 version of Magic Mirror. We will consider adding software to modify the backlight brightness function;
4. The black frame depends on factors such as the LCD AA area, touchpad and rear case model, and will be adjusted appropriately in conjunction with customer feedback;
   5.13.3inch Magic Mirror is built-in Raspberry Pi 3A+, raspberry Pi is not a toy, for more information, please check RPI official website: https://www.raspberrypi.org/
   Maybe they are referring to the slower running speed, which depends on the pi version (currently 3A+). You can expect the CM4 version of Magic Mirror.