B550 AORUS ELITE V2 (rev. 1.0/1.1) Key Features | Motherboard - GIGABYTE Global
90MB14V0-M0EAY0, Asus AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A | EET
AMD B550 motherboards with M2 PCIe 4.0 support would launch June 16th
MSI B550-A PRO ATX AM4 PCIe 4.0 Motherboard
90MB14I0-M0EAY0, Asus AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support
ASUS ROG STRIX B550-F GAMING (WI-FI) II - Motherboard - LDLC 3-year warranty
Best B550 Motherboards: AMD's More Affordable PCIe 4.0 Option | Tom's Hardware
GetUSCart- ASUS ROG Strix B550-E Gaming AMD AM4 3rd Gen Ryzen ATX Gaming Motherboard-PCIe 4.0, NVIDIA SLI, WiFi 6, 2.5Gb LAN, 14+2 Power Stages, USB 3.2 Type-C
B550 motherboard guide: ASUS and AMD bring PCI Express 4.0 to everyone with ROG Strix, TUF Gaming, and Prime - Edge Up