I have an Asrock DESKMINI A300 with a Ryzen 5 3400g. I noticed that there is the newer Asrock DESKMINI X300 that supports Ryzen 4000 APUs and even looks better IMO. I
For ECS A300AM4-TI5 Mini ITX Motherboard 32GB AM4 DDR4 17*17 Mainboard 100% Tested Fully Work - AliExpress