Format:ATX; Chipset:AMD B550, AMD; Socket:Socket AM4; Motherboard memory module type:DDR4; RAID support:1, 10; PCI express 16x:2B550M Phantom Gaming 4Supports AMD AM4 Socket Ryzen™ 3000, 4000 G-Series and 5000 Series Desktop Processors*8 Power Phase designSupports DDR4 4733+ (OC)1 x PCIe 4.0 x16, 1 x PCIe 3.0 x16, 1 x PCIe 3.0 x1Supports AMD CrossFireX™Graphics Output Options: HDMI, DisplayPort7.1 CH HD Audio (Realtek ALC887/897 Audio Codec)4 x SATA3, 1 x Hyper M.2(PCIe Gen4 x4), 1 x M.2(PCIe Gen3 x2 & SATA3)8 x USB 3.2 Gen1 (4 Front, 4 Rear)6 x USB 2.0 (4 Front, 2 Rear)Realtek Gigabit LAN *Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G.TECHNICAL SPECIFICATIONSUnique FeatureASRock Super Alloy- Premium 50A Power Choke- Sapphire Black PCB- High Density Glass Fabric PCB- 2oz Copper PCBASRock Hyper M.2 (PCIe Gen4x4)ASRock Full Spike Protection (for all USB, Audio, LAN Ports)ASRock Live Update & APP ShopCPU- Supports AMD AM4 Socket Ryzen™ 3000, 4000 G-Series and 5000 Series Desktop Processors*- Digi Power design- 8 Power Phase design*Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G.Chipset- AMD B550Memory- Dual Channel DDR4 Memory Technology- 4 x DDR4 DIMM Slots- AMD Ryzen series CPUs (Matisse) support DDR4 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*- AMD Ryzen series APUs (Renoir) 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- 15µ Gold Contact in DIMM Slots*Please refer to below table for AMD non-XMP memory frequency support. For more details, please refer to the QVL on ASRockqqq1s website.**Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.BIOS- 256Mb AMI UEFI Legal BIOS with GUI support- Supports qqq1qqq1Plug and Playqqq1qqq1- ACPI 5.1 compliance wake up events- Supports jumperfree- SMBIOS 2.3 support- CPU, CPU VDDCR_SOC, DRAM, +1.8VSB, Voltage Multi-adjustmentGraphics- 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 1.4 ports by independent display controllers- Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz- Supports DisplayPort 1.4 with max. resolution up to 5K (5120x2880)@120Hz- Supports 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 2.1- 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- Supports Microsoft PlayReady*Actual support may vary by CPU**The Max shared memory 16GB requires 32GB system memory installed. Audio- 7.1 CH HD Audio (Realtek ALC887/897 Audio Codec)- Supports Surge Protection 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 SlotsAMD 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)*- 1 x PCI Express 3.0 x1 Slot- Supports AMD Quad CrossFireX™ and CrossFireX™*Supports NVMe SSD as boot disks Storage- 4 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 2280 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_2), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)**Supports NVMe SSD as boot disksSupports ASRock U.2 Kit Connector- 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)***- 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)- 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection)*Support in total up to 12V/3A, 36W LED Strip**Support in total up to 5V/3A, 15W LED Strip***The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.****The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use. Rear Panel I/O- 1 x PS/2 Mouse/Keyboard Port- 1 x HDMI Port- 1 x DisplayPort 1.4- 4 x USB 3.2 Gen1 Ports (Supports ESD Protection)- 2 x USB 2.0 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 Software and UEFISoftware- ASRock Motherboard Utility (A-Tuning)- ASRock Polychrome SYNC*UEFI- ASRock Full HD UEFI- ASRock Instant Flash*These utilities can be downloaded from ASRock Live Update & APP Shop. 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 Hardware Monitor - Temperature Sensing: CPU, Chassis/Water Pump Fans- Fan Tachometer: CPU, Chassis/Water Pump Fans- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis/Water Pump Fans- Fan Multi-Speed Control: CPU, Chassis/Water Pump Fans- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, CPU VDDCR_SOC, DRAM, VPPM, +1.8V Form Factor - mATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm- Solid Capacitor design- 2oz Copper PCB OS - Microsoft Windows 10 64-bit Certifications - FCC, CE- ErP/EuP ready (ErP/EuP ready power supply is required)