New Model ASRock B550 Steel Legend AMD AM4 ATX Motherboard with PCIe 4.0 Hyper M.2 and Multi GPU Support

Specifications Model B550 Steel Legend CPU Socket AMD AM4 Socket Chipset AMD B550 Form Factor ATX Memory 4 x DDR4 DIMM Slots AMD Ryzen series CPUs (Matisse) 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 memory Max. capacity of system memory: 128GB Supports Extreme Memory Profile (XMP) memory modules 15 Gold Contact in DIMM Slots Graphics Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096×2160) @ 60Hz Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports Expansion Slots AMD Ryzen series CPUs (Matisse) : 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode) AMD Ryzen series APUs (Renoir) : 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode) 2 x PCI Express 3.0 x1 Slots 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module Multi-GPU support AMD Quad CrossFireX and CrossFireX Storage 6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug 1 x Hyper M.2 Socket (M2_1), supports M Key type 2260/2280/22110 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir) 1 x M.2 Socket (M2_3), supports M Key type 2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s) LAN 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) Audio 7.1 CH HD Audio with Content Protection (Realtek ALC1200 Audio Codec) Premium Blu-ray Audio support Supports Surge Protection PCB Isolate Shielding Individual PCB Layers for R/L Audio Channel Nahimic Audio Rear Panel I/O 2 x Antenna Ports 1 x PS/2 Mouse/Keyboard Port 1 x HDMI Port 1 x DisplayPort 1.4 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) 2 x USB 3.2 Gen1 Ports 4 x USB 2.0 Ports 6 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 / Microphone Internal I/O Connectors 1 x SPI TPM Header 1 x Power LED and Speaker Header 2 x RGB LED Headers 2 x Addressable LED Headers 1 x CPU Fan Connector (4-pin) 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control) 5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control) 1 x 24 pin ATX Power Connector (Hi-Density Power Connector) 1 x 8 pin 12V Power Connector (Hi-Density Power Connector) 1 x 4 pin 12V Power Connector (Hi-Density Power Connector) 1 x Front Panel Audio Connector (15 Gold Audio Connector) 2 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) 1 x Front Panel Type C USB 3.2 Gen1 Header (Supports ESD Protection) 1 x Dr. Debug with LED H/W Monitoring Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, CPU VDDCR_SOC, DRAM, VPPM, CPU VDD 1.8V BIOS 256Mb AMI UEFI Legal BIOS with GUI support Supports Plug and Play ACPI 5.1 compliance wake up events Supports jumperfree SMBIOS 2.3 support CPU, CPU VDDCR_SOC, DRAM, VPPM, VTT_DDR Offset, CPU VDD 1.8 Voltage Multi-adjustment Accessories Quick Installation Guide, Support CD 2 x SATA Data Cables 3 x Screws for M.2 Sockets 2 x Standoffs for M.2 Sockets Dimensions 30.5 cm x 24.4 cm