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 Confirms Support for Ryzen 3000 APUs in DeskMini A300 SFF System
ASRock > DeskMini A300 Series
ASROCK DESKMINI A300
ASRock > DeskMini A300 Series
The Smallest Ryzen Yet: Asrock DeskMini A300 Review | TechSpot
Amazon.com: ASRock Barebone System Components Other DESKMINI 310W : Electronics
ASRock Launches World's First Mini-STX Platform Based on AMD A300: DeskMini A300 | TechPowerUp