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
ASRock > DeskMini A300 Series
Asrock Deskmini X300 Cases And Motherboard + Ryzen 5 3400g Cpu Suit [ Without (ssd / Rams) ] Nb-rams Socket Am4 Come With Cooler - Motherboards - AliExpress