Motherboard B550M-A CSM ASUS PRIME Dual M.2 PCIe 4.0

Compact AMD B550 board with dual M.2 and PCIe 4.0 support The ASUS PRIME B550M-A/CSM is an AMD AM4 micro ATX motherboard featuring the AMD B550 chipset, Dual M.2 sockets including a PCIe 4.0 x4-capable slot (with supported Ryzen CPU), and support for DDR4 memory up to DDR4-4600(O.C.).

Key Features:

• Dual M.2 support: Install two high-speed NVMe or SATA drives for fast system storage and flexible configurations.

• PCIe 4.0-capable primary slot: Use a PCIe4-capable Ryzen CPU to get maximum bandwidth to a PCIe 4.0 x16 graphics or accelerator card.

• Commercial lifecycle & management: ASUS Corporate Stable Model (CSM) with ASUS Control Center Express simplifies deployment and long-term stability for business systems.

• Comprehensive cooling: VRM and PCH heatsinks plus Fan Xpert 2+ support stable operation under sustained load.

• Aura Sync RGB: Sync case lighting with Addressable Gen2 support for coordinated system aesthetics.

• Extensive rear I/O: Modern display and USB options for flexible connectivity at the back panel.

Technical Specifications:

• Chipset: AMD B550

• Socket: AMD AM4; Ready for Ryzen 5000 / 4000 G-Series / 3000 Series (see ASUS CPU support list)

• Form Factor: micro ATX (9.6 inch x 9.6 inch / 24.4 cm x 24.4 cm)

• Memory Support: 4 x DIMM, Dual Channel, DDR4; supported speeds up to DDR4-4600(O.C.) (varies by model/region)

• Max Memory: up to 128 GB DDR4

• M.2 Slots: Total 2 x M.2 sockets: M.2_1: Type 2242/2260/2280/22110 (PCIe 4.0 x4 & SATA modes when using supported Ryzen CPU); M.2_2: Type 2242/2260/2280 (PCIe 3.0 x4 & SATA modes)

• PCIe Slots: 1 x PCIe 4.0 x16 (x16 mode); 2 x PCIe 3.0 x1

• Networking: Realtek RTL8111H 1 Gb Ethernet

• Rear I/O: 1 x HDMI 2.1 (4K@60Hz), 1 x DVI-D, 1 x D-Sub; 2 x USB 3.2 Gen 2 Type-A; 4 x USB 3.2 Gen 1 Type-A; plus legacy USB/PS/2

• SATA: 4 x SATA 6Gb/s ports (RAID 0,1,10 support)

• Audio: Realtek ALC887 7.1-Channel High Definition Audio CODEC; up to 24-bit/192 kHz playback; audio shielding and premium capacitors

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