Rongpin DR4-S905/DR4-A311D SoM features Amlogic S905D3 or A311D processor
Besides evaluation, the board looks to be especially suitable for digital signage as it’s rather thin and can be easily integrated into a display.
On the software side, Rongpin claims support for Android 9. and Linux+Qt, but none of that appears to be available publicly. An Ubuntu 20.04 image should also be available, as I first found out about the DR4-S905/DR4-A311D SoM through a carrier board developed in Thailand called the “DragonEdge AI A311D” that’s supposed to run Ubuntu 20.04, but I was unable to obtain the image or documentation for that board either. It’s a pre-order, so that may explain it.