Supports 3rd Gen AMD AM4 Ryzen / Future AMD Ryzen Processors6 Power Phase DesignSupports DDR4 4733+ (OC)1 PCIe 4.0 x16, 1 PCIe 3.0 x1Graphics Output Options: HDMI, DVI-D, D-Sub7.1 CH HD Audio (Realtek ALC887 Audio Codec)4 SATA3, 1 Hyper M.2 (PCIe Gen4 x4 & SATA3)6 USB 3.2 Gen1 (2 Front, 4 Rear)Gigabit LAN6 Power Phase DesignFeaturing sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.Premium 50A Power ChokeCompared to traditional chokes, ASRock's premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.Hyper M.2 (PCIe Gen4 x4)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 experienceHDMI 4k @60HzSupports the most recent HDMI 4K 60Hz graphics output specification. With the larger bandwidth and increased frame rate, the motion on your screen becomes more fluid and less blurry.SpecificationUnique FeatureASRock Super Alloy- Premium 50A Power Choke- Sapphire Black PCB- High Density Glass Fabric PCBASRock Hyper M.2 (PCIe Gen4x4)ASRock Full Spike Protection (for all USB, Audio, LAN Ports)ASRock Live Update & APP ShopCPUSupports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors6 Power Phase designChipsetAMD B550MemoryDual Channel DDR4 Memory Technology2 x DDR4 DIMM SlotsAMD Ryzen series CPUs (Matisse) support DDR4 4600+(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memoryAMD Ryzen series APUs support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memoryMax. capacity of system memory: 64GBSupports Extreme Memory Profile (XMP) memory modules15µ Gold Contact in DIMM SlotsBIOS256Mb AMI UEFI Legal BIOS with GUI supportSupports "Plug and Play"ACPI 5.1 compliance wake up eventsSupports jumperfreeSMBIOS 2.3 supportCPU, CPU VDDCR_SOC, DRAM, VDDP Voltage Multi-adjustmentGraphicsIntegrated AMD Radeon Vega Series Graphics in Ryzen Series APUDirectX 12, Pixel Shader 5.0Shared memory default 2GB. Max Shared memory supports up to 16GB.Three graphics output options: D-Sub, DVI-D and HDMISupports Triple MonitorSupports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60HzSupports DVI-D with max. resolution up to 1920x1200 @ 60HzSupports D-Sub with max. resolution up to 1920x1200 @ 60HzSupports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required)Supports HDR (High Dynamic Range) with HDMI 2.1Supports HDCP 2.3 with DVI-D and HDMI 2.1 PortsSupports 4K Ultra HD (UHD) playback with HDMI 2.1 PortSupports Microsoft PlayReadyAudio7.1 CH HD Audio (Realtek ALC887 Audio Codec)Supports Surge ProtectionLANPCIE x1 Gigabit LAN 10/100/1000 Mb/sRealtek RTL8111HSupports Wake-On-LANSupports Lightning/ESD ProtectionSupports Energy Efficient Ethernet 802.3azSupports PXESlotsAMD Ryzen series CPUs (Matisse)- 1 x PCI Express 4.0 x16 Slot (PCIE1: x16 mode)AMD Ryzen series APUs- 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)- 1 x PCI Express 3.0 x1 SlotStorage4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug1 x Hyper M.2 Socket, supports M Key type 2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s)Connector1 x SPI TPM Header1 x COM Port Header1 x Chassis Intrusion and Speaker Header1 x CPU Fan Connector (4-pin)2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)1 x 24 pin ATX Power Connector1 x 4 pin 12V Power Connector1 x Front Panel Audio Connector2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)Rear Panel I/O1 x PS/2 Mouse/Keyboard Port1 x D-Sub Port1 x DVI-D Port1 x HDMI Port2 x USB 2.0 Ports (Supports ESD Protection)4 x USB 3.2 Gen1 Ports (Supports ESD Protection)1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)HD Audio Jacks: Line in / Front Speaker / MicrophoneSoftware and UEFISoftware- ASRock Motherboard Utility (A-Tuning)- ASRock XFast LANUEFI- ASRock Full HD UEFI- ASRock Instant FlashSupport CDDrivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and ToolbarAccessoriesQuick Installation Guide, Support CD, I/O Shield2 x SATA Data Cables1 x Screw for M.2 SocketHardware MonitorTemperature Sensing: CPU, Chassis FansFan Tachometer: CPU, Chassis FansQuiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis FansFan Multi-Speed Control: CPU, Chassis FansCASE OPEN detectionVoltage monitoring: +12V, +5V, +3.3V, CPU VcoreForm FactorMicro ATX Form Factor: 9.0-in x 7.9-in, 23.0 cm x 20.1 cmSolid Capacitor designOSMicrosoft Windows 10 64-bitCertificationsFCC, CEErP/EuP ready (ErP/EuP ready power supply is required)