Amazon.com: ASUS ProArt B550-Creator AMD (Ryzen 5000/3000) ATX content creator motherboard (Thunderbolt™ 4, dual M.2, PCIe 4.0, Dual 2.5 Gb Lan, DisplayPort/HDMI, USB 3.2 Gen 2 Type-A and Type-C, and RGB headers) :
Biostar publishes list of 3rd Gen Ryzen-compatible motherboards and reveals "AMD Ryzen 3000 Desktop Ready" logo in the process - NotebookCheck.net News
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MSI A520M-A PRO Motherboard 'mATX, AMD Ryzen 3000 3rd Gen, AM4, DDR4, M.2, USB 3.2 Gen 1 Type A, LAN, HDMI, DVI-D' - PC Maestro
Asrock X570 STEEL LEGEND ATX AMD Motherboard Socket AM4 for Ryzen 2000 and 3000 Series Processors 128GB DDR4 4666+ Supported
Amazon.com: MAXSUN A520 M-ATX Motherboard AMD AM4 Zen 3, DDR4, PCIe3.0 x16, SATA 6Gb/s, M.2, USB 3.1, HDMI/VGA for All Ryzen 1000-4000 Series APU/CPU and Ryzen 5000 Series CPU (5000 APU Need