ROCK64
The ROCK64 is a credit-card size 4K60P HDR Media Board Computer powered by Rockchip RK3328 Quad-Core ARM Cortex A53 64-Bit Processor and supports up to 4GB 1866MHz LPDDR3 memory. It provides an eMMC module socket, MicroSD Card slot, Pi-2 Bus, Pi-P5+ Bus, USB 3.0, and many other peripheral interfaces for makers to integrate with sensors and other devices.
It supports many different open source operating systems, such as Android, Debian, and Yocto.