B550 Phantom Gaming 4/ac Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors 8 Power Phase Design, Digi Power Supports DDR4 4733+ (OC) 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 2 PCIe 3.0 x1 Graphics Output Options: HDMI AMD CrossFireX™ 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio 4 SATA3, 1 Hyper M.2 (PCIe Gen4 x4) 8 USB 3.2 Gen1 (2 Front, 6 Rear) Gigabit LAN, Wi-Fi 802.11ac (2.4/5GHz) + BT 4.2 TECHNICAL SPECIFICATIONS Gaming Armor Memory- 15µ Gold Contact in DIMM SlotsCooling- XXL Aluminum Alloy HeatsinkAudio- Nahimic Audio Unique Feature ASRock Super Alloy- XXL Aluminum Alloy Heatsink- Premium 50A Power Choke- Sapphire Black PCB- High Density Glass Fabric PCB- 2oz Copper PCBIntel 802.11ac WiFiASRock Steel Slot Gen4ASRock Hyper M.2 (PCIe Gen4x4)ASRock POST Status Checker (PSC)ASRock Full Spike Protection (for all USB, Audio, LAN Ports)ASRock Live Update & APP Shop CPU - Supports 3rd Gen AMD AM4 Ryzen™ / future AMD Ryzen™ Processors*- Digi Power design- 8 Power Phase design *Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G. Chipset - AMD B550 Memory - 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 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 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.**- Supports HDMI 2.1 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 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 Port- Supports 4K Ultra HD (UHD) playback with HDMI 2.1 Port- Supports Microsoft PlayReady *Actual support may vary by CPU **The Max shared memory 16GB requires 32GB system memory installed. Slots AMD Ryzen series CPUs (Matisse)- 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)*AMD Ryzen series APUs- 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)* - 2 x PCI Express 3.0 x1 Slots- Supports AMD Quad CrossFireX™ and CrossFireX™- 1 x M.2 Socket (Key E) with the bundled WiFi-802.11ac module *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 2260/2280/22110 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s)* *Supports NVMe SSD as boot disksSupports ASRock U.2 Kit 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 Wireless LAN - Intel 802.11ac WiFi Module- Supports IEEE 802.11a/b/g/n/ac- Supports Dual-Band (2.4/5 GHz)- Supports high speed wireless connections up to 433Mbps- S