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 A300W AMD A300 Barebone System - Newegg.com
A review, of sorts, of the Asrock DeskMini A300 - Hardware - TWiT.Community
Ryzen 5 Pro 4650G vs 3400G in the Asrock Desk Mini A300 - YouTube