Asus PRIME B550M-A, AMD B550, AM4, Micro ATX, 4 DDR4, VGA, DVI, HDMI, PCIe4, M.2 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     AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors     Comprehensive coolin VRM heatsink, PCH heatsink, and Fan Xpert 2     Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A     Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware Prime     ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. Tune It Your Way      Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work - maximizing your productivity. Cooler by Design      Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads. Build on a Solid Foundation     Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options. VRM Heatsink and Thermal Pads      A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance. PCIe 4.0 M.2 (up to 64 Gbps)     Achieve speed with onboard M.2     PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform. Little Things Make a Big Difference     Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a uniquely personal look. Outstanding Audio     Combined onboard features deliver elevated audio     Intelligent design and premium hardware create audio quality unlike anything youve ever experienced.     Audio Shielding     Separates analog/digital signal domains, significantly reducing multi-lateral interference.     Separate Layer for Left and Right Tracks     Ensures minimal crosstalk between audio paths. Premium Japanese Capacitors     Premium parts provide an immersive sound signature, with exception Specification Motherboard Type: Desktop Form Factor: Micro ATX Socket: AMD AM4 Chipset: AMD B550 DDR Type: DDR4 CPU Support: *Note: not compatible with Ryzen 5 3400G & Ryzen 3 3200G CPUs RAM Technology: DDR4 (Dual Channel) RAM Slots: 4 x DIMM RAM Speeds: 3rd Gen AMD Ryzen CPUs: 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Next Gen AMD Ryzen PRO CPUs: 4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Maximum Memory: 128GB Graphics: Integrated Graphics Processor* Graphics specifications may vary between CPU types Graphics Ports: 1 x VGA 1 x DVI-D 1 x HDMI Multi-GPU Support: - PCI/PCI Express: 1 x PCIe 4.0 x16 (x16 mode) 2 x PCIe 3.0 x1 Storage: 4 x SATA III 1 x M.2 (2242/2260/2280/22110) - SATA & PCIe 1 x M.2 (2242/2260/2280) - SATA & PCIe RAID: \"RAID 0, 1, 10\" Wireless: - LAN: GB LAN Audio: Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC USB Ports Supported: \"2 x USB 3.2 Gen2 Type-A (at back) 6 x USB 3.2 Gen1 (4 at back, 2 at mid-board) 4 x USB 2.0 (at mid-board)\" Back Panel I/O Ports: 1 x PS/2 keyboard/mouse 1 x DVI-D 1 x D-Sub 1 x HDMI 1 x LAN (RJ45) 2 x USB 3.2 Gen2 Type-A 4 x USB 3.2 Gen 1 Type-A 3 x Audio jacks Internal I/O Connectors: 1 x CPU Fan 1 x CPU OPT Fan 2 x Chassis Fan 2 x Aura RGB Strip 1 x Addressable Gen2 1 x USB 3.2 Gen1 2 x USB 2.0 2 x M.2 Socket 3 with M key 1 x SPI TPM 4 x SATA 6Gb/s 1 x S/PDIF out 1 x 24-pin EATX 1 x 8-pin EATX 12V 1 x Front audio 1 x Clear CMOS jumper 1 x System panel 1 x COM port 1 x Speaker Accessories: I/O Shield 2 x SATA 6Gb/s cables 1 x Supporting DVD User manual 1 x M.2 SSD screw package Additional Features: See Overview Package Type: Retail Package Weight: 0.9800 kg Warranty: 3 Years M.2 Slot(s): Yes (M.2) No. LAN Ports: 1 x LAN Max LAN Speed: GB LAN