The idea is to get rid of both hardware and software backdoors, install all necessary tools on a Pi 4 and sell it as a plug-and-play device. Depending on a shipping cost the total estimated price is 150 USD. If you have your [Pi 4](https://www.raspberrypi.com/products/raspberry-pi-4-model-b) or [ROCKPro64](https://pine64.com/product/rockpro64-4gb-single-board-computer) already you can just follow the guide.
The idea is to get rid of both hardware and software backdoors, install all necessary tools on a Pi 4 and sell it as a plug-and-play device. Including shipping cost the total estimated price is 200 USD. If you have your [Pi 4](https://www.raspberrypi.com/products/raspberry-pi-4-model-b) or [ROCKPro64](https://pine64.com/product/rockpro64-4gb-single-board-computer) already you can just follow the guide.
* [Raspberry Pi 4 model b](https://www.raspberrypi.com/products/raspberry-pi-4-model-b) with 4GB of RAM device will be used in order to avoid Intel ME and AMD PSP.
* [Devuan GNU+Linux](https://arm-files.devuan.org/RaspberryPi%20Latest%20Builds) will be installed, a fork of Debian without [systemd](https://ebin.city/~werwolf/posts/systemd-sucks).