B450 Steel Legend Features: AMD AM4 Socket Supports DDR4 3533+ (OC) 2 PCIe 3.0 x16, 4 PCIe 2.0 x1 AMD Quad CrossFireX™ Graphics Output: DisplayPort, HDMI 7.1 CH HD Audio (Realtek ALC892 Audio Codec), Nichicon Fine Gold Series Audio Caps 6 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (PCIe Gen3 x2 & SATA3) 2 USB 3.1 Gen2 (Rear Type-A+C) 6 USB 3.1 Gen1 (2 Front, 4 Rear) Realtek Gigabit LAN Specifications: CPU AMD AM4 Socket Digi Power design 6 Power Phase design Supports 105W Water Cooling (Pinnacle Ridge); Supports 95W Water Cooling (Summit Ridge); Supports 65W Water Cooling (Raven Ridge) Chipset AMD Promontory B450 Memory - Dual Channel DDR4 Memory Technology - 4 x DDR4 DIMM Slots - AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3533+(OC) / 3200(OC) / 2933(OC) / 2667/2400/2133 ECC & non-ECC, un-buffered memory - AMD Ryzen series CPUs (Summit Ridge) support DDR4 3466+(OC) / 3200(OC) / 2933(OC) / 2667/2400/2133 ECC & non-ECC, un-buffered memory - AMD Ryzen series CPUs (Raven Ridge) support DDR4 3466+(OC) / 3200(OC) / 2933/2667/2400/2133 non-ECC, un-buffered memory - Max. capacity of system memory: 64GB - 15μ Gold Contact in DIMM Slots BIOS - 128Mb AMI UEFI Legal BIOS with multilingual GUI support - Supports "Plug and Play" - ACPI 5.1 compliance wake up events - Supports jumperfree - SMBIOS 2.3 support - DRAM Voltage multi-adjustment Graphics - Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU - DirectX 12, Pixel Shader 5.0 - Shared memory default 2GB. Max Shared memory supports up to 16GB. - Dual graphics output: Support HDMI and DisplayPort 1.2 ports by independent display controllers - Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz - Supports DisplayPort 1.2 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz - Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant HDMI monitor is required) - Supports HDCP 1.4 with HDMI 1.4 and DisplayPort 1.2 Ports - Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and DisplayPort 1.2 Ports Audio - 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray Audio support - Supports Surge Protection - Nichicon Fine Gold Series Audio Caps - PCB Isolate Shielding - Individual PCB Layers for R/L Audio Channel - Gold Audio Jacks LAN - PCIE x1 Gigabit LAN 10/100/1000 Mb/s - Realtek RTL8111H - Supports Wake-On-LAN - Supports Lightning/ESD Protection - Supports Energy Efficient Ethernet 802.3az - Supports PXE Slots AMD Ryzen series CPUs (Summit Ridge and Pinnacle Ridge) - 2 x PCI Express 3.0 x16 Slots (PCIE1: x16 mode; PCIE4: x4 mode) AMD Ryzen series CPUs (Raven Ridge) - 2 x PCI Express 3.0 x16 Slots (PCIE1: x8 mode; PCIE4: x4 mode) (If you use Athlon 2xxGE series APU, PCIE1 slot will run at x4 mode.) AMD Athlon series CPUs - 2 x PCI Express 3.0 x16 Slots (PCIE1: x4 mode; PCIE4: x2 mode) - 4 x PCI Express 2.0 x1 Slots - Supports AMD Quad CrossFireX™ and CrossFireX™ Storage - 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug - 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug - 1 x Ultra M.2 Socket (M2_1), supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s) (with Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16 Gb/s) (with Athlon 2xxGE series APU and Raven Ridge 2) - 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s) Connector - 1 x COM Port Header - 1 x TPM Header - 1 x Power LED and Speaker Header - 1 x RGB LED Header - 1 x Addressable LED Header - 1 x AMD Fan LED Header - 1 x CPU Fan Connector (4-pin) - 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control) - 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control) - 1 x 24 pin ATX Power Connector - 1 x 8 pin 12V Power Connector - 1 x Front Panel Audio Connector - 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection) - 1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports) (Supports ESD Protection) Rear Panel I/O - 1 x PS/2 Mouse/Keyboard Port - 1 x HDMI Port - 1 x DisplayPort 1.2 - 1 x Optical SPDIF Out Port - 2 x USB 2.0 Ports (Supports ESD Protection) - 1 x USB 3.1 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection) - 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection) - 4 x USB 3.1 Gen1 Ports (Supports ESD Protection) - 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED) - HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks) Software and UEFI Software - ASRock A-Tuning - ASRock Polychrome RGB - ASRock XFast LAN UEFI - ASRock Full HD UEFI - ASRock Instant Flash - ASRock Easy RAID Installer Support CD - Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar Accessories - Quick Installation Guide, Support CD, I/O Shield - 2 x SATA Data Cables - 2 x Screws for M.2 Sockets - 1 x Standoff for M.2 Socket Hardware Monitor - Temperature Sensing: CPU, MB - 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, Vcore Form Factor - ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm OS - Microsoft® Windows® 10 64-bit Certifications - FCC, CE - ErP/EuP ready (ErP/EuP ready power supply is required)