Amazon.com: BITEO B250 Mining Motherboard Boot Up Mining Support 30/20/10 Series GPU 12 PCIe X1 to PCIe X16 with CPU mSATA DDR4 VGA DVI-I for BTC/ETH/ZEC/ETC : Electronics
AMD Ryzen 5000 Zen 3 support is rolling out for ASUS, ASRock, Biostar, Gigabyte and MSI 500 series motherboards; no B450 or X470 support until January 2021 at the earliest - NotebookCheck.net News
ASRock > Graphics-Card
H510M-A PRO
ASRock Radeon RX 6800 XT Taichi X Review | TechPowerUp