ASRock > B550M-C
AMD Ryzen series APUs (Picasso) - 2 x PCI Express x16 Slots (PCIE1: Gen3x8 mode; PCIE4: Gen3 x4 mode) * - 2 x PCI Express 3.0 x16 Slots (PCIE2/PCIE3: x1 mode) - Supports AMD Quad CrossFireX™ and CrossFireX™ - 1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O)
PRIME B550M-A｜Motherboards｜ASUS USA
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
B550M DS3H (rev. 1.0/1.1/1.2/1.3) Key Features - GIGABYTE
AMD B550 Ultra Durable Motherboard with Pure Digital VRM Solution, PCIe 4.0 x16 Slot, Dual PCIe 4.0/3.0 M.2 Connectors, Realtek GbE LAN, Smart Fan 5 with FAN STOP, RGB FUSION 2.0, Q-Flash Plus
MSI MAG B550M MORTAR AMD AM4 DDR4 CF Lightning Gen 4 M…
Powered by AMD Ryzen AM4 processors, the MSI MAG B550M MORTAR inspired by the military armor design, tuned for better performance by Core boost, DDR4 Boost, Lightning Gen 4 M.2 with M.2 Shied, 2oz copper PCB
ASRock > B550M-HDV
Supports the next generation PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience. Conventional PC systems processor can only access a fraction of graphics memory and limits system performance.
PRIME B550M-A｜Motherboards｜ASUS Global
AMD B550 (Ryzen AM4) micro ATX gaming motherboard, Advanced AI PC ready, dual M.2, 1 Gb Ethernet, HDMI, DisplayPort, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, front USB 3.2 Gen 1 Type-C®, BIOS FlashBack™, and Aura Sync RGB lighting support
B550M K (rev. 1.0) Key Features | Motherboard - GIGABYTE
AMD B550 Ultra Durable Motherboard with Digital VRM Solution, PCIe 4.0 x16 Slot, Dual PCIe 4.0/3.0 M.2 Connectors, GbE LAN, Smart Fan 5 with FAN STOP
B550M AORUS ELITE (rev. 1.0/1.1/1.2) - GIGABYTE
AMD B550 Ultra Durable Motherboard with Pure Digital VRM Solution, PCIe 4.0 x16 Slot, Dual PCIe 4.0/3.0 M.2 Connectors, Realtek GbE LAN, Smart Fan 5 with FAN STOP, RGB FUSION 2.0, Q-Flash Plus
ASRock > B550M Pro4
Ready for higher capacity and even faster Type 2280 M.2 NVMe SSD to fulfill the need of performance. Hyper M.2 socket that supports PCIe Gen4 x4 while M.2 socket is capable of running PCIe Gen3 x2 and SATA3 mode.
PRIME B550M-A (WI-FI)｜Motherboards｜ASUS USA
AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Intel® WiFi 6, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support