ASRock B550 Pro4 AMD AM4 Socket Motherboard

ASRock B550 ATX Motherboard – Windows 11 Ready

Powerful, feature-rich AMD B550 motherboard designed for 3rd Gen AMD Ryzen and future AMD Ryzen processors, with robust power delivery, advanced audio, and high-speed connectivity.

Key Features

• Windows 11 Ready
• CPU Support
• Supports 3rd Gen AMD AM4 Ryzen and future AMD Ryzen processors
• Digi Power design
• 8 Power Phase design

• Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200G

• Graphics & Display

• Integrated AMD Radeon Vega Series Graphics in Ryzen Series APUs
• Dual graphics outputs: HDMI and D-Sub (independent display controllers)
• HDMI 2.1: up to 4K x 2K (4096x2160) @ 60Hz
• D-Sub: up to 1920x1200 @ 60Hz
• Supports DirectX 12, Pixel Shader 5.0

• Supports Auto Lip Sync, Deep Color (12bpc), xvYCC, HBR audio, HDR, HDCP 2.3, 4K UHD playback, Microsoft PlayReady

• Audio

• 7.1 CH HD Audio with Content Protection (Realtek ALC1200 Audio Codec)
• Premium Blu-ray Audio support
• Surge protection, PCB isolate shielding, individual PCB layers for R/L audio channel

• Nahimic Audio for immersive sound via headphones, headsets, speakers, USB, Wi-Fi, analog, or HDMI

• Networking

• PCIE x1 Gigabit LAN 10/100/1000 Mb/s (Realtek RTL8111H)
• Wake-On-LAN, Lightning/ESD protection, Energy Efficient Ethernet 802.3az, PXE support

Power & PCB Design

• 8 Power Phase Design
  Sturdy components and smooth power delivery to the CPU, with enhanced performance and low temperatures.

• Premium 50A Power Choke
  Improves saturation current up to three times over traditional chokes, delivering enhanced Vcore voltage.

• 2oz Copper PCB
  2 ounce copper inner layers for stable signal traces, lower temperatures, and higher energy efficiency, supporting extreme DDR4 memory performance.

• ASRock Super Alloy

• XXL Aluminum Alloy Heatsink
• Premium 50A Power Choke
• Sapphire Black PCB
• High Density Glass Fabric PCB
• 2oz Copper PCB

Memory

• Dual Channel DDR4 Memory Technology
• 4 x DDR4 DIMM slots
• Max system memory: 128GB
• 15µ gold contact in DIMM slots
• Supports Extreme Memory Profile (XMP) memory modules

AMD Ryzen series CPUs (Matisse)
Supports 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
Supports 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

Expansion & Slots

• PCIe Slots (with AMD Ryzen series CPUs – Matisse)

• 2 x PCI Express x16

  • PCIE1: Gen4 x16 mode
  • PCIE3: Gen3 x4 mode

• PCIe Slots (with AMD Ryzen series APUs)

• 2 x PCI Express x16
  • PCIE1: Gen3 x16 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), supports type 2230 WiFi/BT module
• ASRock Steel Slot Gen4

Storage

• 6 x SATA3 6.0 Gb/s connectors

• Supports RAID 0, 1, 10, NCQ, AHCI and Hot Plug

• 1 x Hyper M.2 Socket (M2_1)

• M Key type 2260/2280/22110

• PCIe module up to Gen4 x4 (64 Gb/s) with Matisse or Gen3 x4 (32 Gb/s)

• 1 x M.2 Socket (M2_3)

• M Key type 2242/2260/2280

• Supports M.2 SATA3 6.0 Gb/s module and M.2 PCIe module up to Gen3 x2 (16 Gb/s)

• ASRock Full Coverage M.2 Heatsink

• ASRock Hyper M.2 (PCIe Gen4x4)

Connectivity & I/O

Rear Panel I/O

• Antenna bracket
• 1 x PS/2 mouse/keyboard port
• 1 x D-Sub port
• 1 x HDMI port
• 1 x USB 3.2 Gen2 Type-A port (10 Gb/s, ESD protection)
• 1 x USB 3.2 Gen2 Type-C port (10 Gb/s, ESD protection)
• 4 x USB 3.2 Gen1 ports (ESD protection)
• 1 x RJ-45 LAN port with ACT/LINK and SPEED LEDs
• HD audio jacks: Line in / Front speaker / Microphone

Internal Connectors

• 1 x COM port header
• 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)
• 4 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 4-pin 12V power connector
• 1 x Front panel audio connector
• 2 x USB 2.0 headers (up to 4 USB 2.0 ports, ESD protection)
• 1 x USB 3.2 Gen1 header (up to 2 USB 3.2 Gen1 ports, ESD protection)

USB & Unique Features

• ASRock USB 3.2 Gen2
• 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)

• 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)

• ASRock Exclusive Features

• ASRock Steel Slot Gen4
• ASRock Full Coverage M.2 Heatsink
• ASRock 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

BIOS & UEFI

• 256Mb AMI UEFI Legal BIOS with GUI support
• Supports Plug and Play
• ACPI 5.1 compliance wake up events
• Jumperfree configuration
• SMBIOS 2.3 support
• CPU, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, 2.5V_PROM, +1.8VSB, VDDP voltage multi-adjustment
• ASRock Full HD UEFI
• ASRock Instant Flash

Software

• Included Software
• ASRock Motherboard Utility (A-Tuning)
• ASRock Polychrome SYNC

• ASRock XFast LAN

• 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
• 3 x screws for M.2 sockets
• 1 x standoff for M.2 socket

Hardware 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, 1.05V_PROM_S5, +1.8V, VDDP

Form Factor & Build

• ATX Form Factor: 12.0" x 9.6" (30.5 cm x 24.4 cm)
• Solid capacitor design
• 2oz Copper PCB

Operating System & Certifications

• OS Support

• Microsoft Windows 10 64-bit

• Certifications

• FCC
• CE
• ErP/EuP ready (ErP/EuP ready power supply required)