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
For my first time build PC, I bought this mobo Gigabyte b450m s2h. It has a sticker and it say "Ryzen 5000 desktop ready". If I want to buy Processor Ryzen 5
B450 or B550 for Ryzen 5000 Series? Should B450 Owners Upgrade? - YouTube
AMD Ryzen 5000 Zen 3 BIOS Support Added To These ASUS, Gigabyte, And MSI 500-Series Motherboards | HotHardware
Amazon.com: Gigabyte B450M K (Socket AM4/B450/DDR4/S-ATA 600/Micro ATX) : Electronics