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
Super Tiny Ryzen 4750G PC Build - ASRock Jupiter X300 - YouTube
ASRock DeskMini X300 and A300 mini PC barebones first to support up to an AMD Ryzen 7 Pro 4750G APU - NotebookCheck.net News
Asrock DeskMini X300 with AMD Ryzen 7 5700G : r/MiniPCs