MSI MAG B550M Bazooka AM4 DDR4 AMD Motherboard

The MSI MAG B550M Bazooka is a Micro-ATX motherboard built on the AMD B550 chipset, designed for AM4 socket processors including 3rd Gen AMD Ryzen CPUs and compatible with future AMD Ryzen processors via BIOS update. Its compact 9.6 x 9.6 inch (24.4 x 24.4 cm) form factor makes it a practical choice for space-conscious gaming and productivity builds without sacrificing connectivity or feature depth. Memory support is a strong point: four DDR4 DIMM slots accommodate up to 128 GB of unbuffered memory. JEDEC speeds range from 1866 MHz to 3200 MHz, while A-XMP overclocking profiles extend support up to 4400 MHz, giving enthusiasts meaningful headroom for performance tuning. The board operates in dual-channel configuration and also supports ECC UDIMM memory in non-ECC mode. Storage is handled by two M.2 Key-M slots and four SATA 6 Gb/s ports. The primary M.2 slot (M2_1) draws bandwidth directly from the AMD processor and supports both PCIe 4.0/3.0 x4 and SATA 6 Gb/s devices in 2242, 2260, and 2280 form factors. The secondary M.2 slot (M2_2) is connected through the B550 chipset and supports PCIe 3.0 x4. RAID 0, 1, and 10 are available for SATA arrays, and RAID 0 and 1 are supported for M.2 NVMe devices. Expansion slots include one PCIe 3.0/4.0 x16 slot and two PCIe 3.0 x1 slots — the x16 slot's supported generation depends on the installed processor. USB connectivity spans USB 3.2 Gen 1 (5 Gbps) and USB 2.0 ports across both the rear panel and internal headers, including a front-panel USB Type-C internal connector. The rear I/O panel also provides DisplayPort (up to 4096x2160 @ 60 Hz) and HDMI (up to 4096x2160 @ 24 Hz) outputs for processors with integrated graphics. Audio is delivered by a Realtek ALC892 codec supporting 7.1-channel High Definition Audio. Networking is handled by a Realtek RTL8111HN Gigabit LAN controller paired with MSI's LAN Manager software for traffic prioritisation. The I/O controller is a NUVOTON NCT6687-R chip. RGB enthusiasts are served by two 4-pin RGB LED connectors and two 3-pin RAINBOW LED headers on board. A Flash BIOS Button on the rear panel allows BIOS updates from a USB drive without a CPU or memory installed. Verified Specifications: - Form Factor: Micro-ATX, 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm) - Socket: AM4 - Chipset: AMD B550 - CPU Support: 3rd Gen AMD Ryzen; future Ryzen with BIOS update - Memory: 4x DDR4 DIMM, max 128 GB; JEDEC up to 3200 MHz; OC up to 4400 MHz (A-XMP) - Storage: 2x M.2 (M2_1: PCIe 4.0/3.0 x4 + SATA; M2_2: PCIe 3.0 x4), 4x SATA 6 Gb/s - PCIe: 1x PCIe 3.0/4.0 x16, 2x PCIe 3.0 x1 - USB: 4x USB 3.2 Gen 1 Type-A (rear), 1x USB 3.2 Gen 1 Type-C (internal), 2x USB 3.2 Gen 1 via header, 2x USB 2.0 (rear), 4x USB 2.0 via headers - Audio: Realtek ALC892, 7.1-channel HD Audio - LAN: Realtek RTL8111HN 1 Gbps - Display: 1x DisplayPort (4K@60Hz), 1x HDMI (4K@24Hz) - RAID: 0, 1, 10 (SATA); 0, 1 (NVMe) - RGB Headers: 2x 4-pin RGB, 2x 3-pin RAINBOW - I/O Controller: NUVOTON NCT6687-R - Warranty: 3 Years