Here is such a device. Compact, 2 USB OTG + Wi-Fi. I use it for home automation, in conjunction with a USB GPIO adapter. I connect to the network via USB Ethernet, but I really want a WLAN. I checked its operation with LibreELEC 12. WiFi is working. I copied the rk322x-box.dtb file to Armbian. It didn't help.
Can you help me find the UART interface on the board? I can't see it, and the radiator is glued shut.