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    ASRock B550M PRO4 Micro ATX AMD B550 AM4 Motherboard with DDR4 4733 MHz, PCIe 4.0, M.2 and USB 3.2

    (576)(31) Write a Review
    #1 Best Seller
    Best Seller
    in AMD Motherboards
    • B550 PHANTOM GAMING 4 AC
    • B550 PRO4
    • B550M-HDV
    • B550M-ITX/AC
    • B550M PRO4
    • B550M WiFi
    • AMD B550 Chipset: Micro ATX motherboard with AM4 socket for supported AMD Ryzen processors
    • CPU Compatibility: Supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series and 3000 G-Series processors; not compatible with AMD Athlon processors
    • DDR4 Memory: Four 288-pin slots support up to 128GB and DDR4 4733 MHz memory performance; supported speeds vary by processor and may require overclocking
    • M.2 Storage: Hyper M.2 socket supports M Key 2280 PCIe modules up to Gen4x4 with Vermeer and Matisse, plus a second M.2 socket for SATA3 or PCIe Gen3 x2 modules
    • USB Connectivity: Rear USB 3.2 Gen2 Type-A and Type-C ports support 10Gb/s, with additional USB 3.2 Gen1 and USB 2.0 ports
    • Audio And LAN: Realtek ALC1200 7.1-channel audio with Nahimic Audio and Realtek RTL8111H Gigabit LAN
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    Overview
    Specs
    Reviews (576)
    B550M Pro4 motherboard
    B550M Pro4
    • 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, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
    • Graphics Output Options: HDMI, DisplayPort, D-Sub
    • AMD CrossFireX
    • 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
    • 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
    • 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
    • Realtek Gigabit LAN
    B550M Pro4 motherboard
    IT'S TIME FOR B550 MOTHERBOARDS
    Everything You Need For Computing
    B550ReadyforRyzen
    a woman is listening music
    Nahimic Audio

    Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant and rich with details.

    a woman is listening music

    The Sound Tracker is a visual indicator that points out the directions from which predominant sounds are coming. Each sound is properly positioned in 360° on a radar for a full immersion during the game.

    8 Power Phase Design of the motherboard
    8 Power Phase Design

    Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.

    Premium 50A Power Choke

    Compared to traditional chokes, ASRock's premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

    2ozCopperPCB-B550 of the motherboard
    2oz Copper PCB

    2 ounce copper inner layers that provide stable signal traces and power shapes! Delivering lower temperature and higher energy efficiency for overclocking, it's able to support the latest DDR4 memory modules with most extreme memory performance!

    POLYRGBLED-B550M Pro4 Gaming 4 WiFi ax
    RULE YOUR OWN LIGHTING WAY - POLYCHROME RGB

    This motherboard features onboard RGB headers and an addressable RGB header that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.

    Polychrome-RGB Phantom Gaming 4 WiFi ax *The addressable RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and length within 2 meters.
    *The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters.
    DualM2-SSD-B550 Pro4 of the  motherboard
    A SOLID M.2-SOLUTION PERFORMER

    Dual M.2 For SSD, Supports Type 22110 M.2
    Ready for higher capacity and even faster Type 22110 M.2 NVMe SSD to fulfill the need of performance. Hyper M.2 socket that supports PCIe Gen4 x4 while M.2 socket is capable of running PCIe Gen3 x2 and SATA3 mode.

    M.2 Armors
    Good M.2 SSD protection is important for longevity and stability. ASRock provides a completed M.2 armor solution that makes SSDs to run in a certain low temperature.

    PCI-E 4.0 of the motherboard
    Reinforced Steel Slot [PCIe 4.0 Version]

    The reinforced steel slot comes with the next generation PCI Express 4.0 standard. The various benefits include:

    • Extra anchor points
    • Stronger latch
    • Ensure signal stability
    • Make sure heavy graphics cards to be well-installed.

    2XUSB3.2Gen2 Phantom Gaming 4 WiFi ax
    Dual USB 3.2 Gen2 (Type-A + Type-C)

    This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen2 ports built on the rear i/o for supporting next generation USB 3.2 Gen2 devices and to deliver up to 10 Gbps data transfer rates.

    chart of USB3.2 Gen2
    M.2 Key For WiFi of the motherboard
    M.2 (KEY E) For WiFi

    Besides the onboard LAN port, users may also choose 802.11ac wireless connections by M.2 (Key E) slot.
    *Wi-Fi module is not included.

    Integrated I/O of the motherboard
    Post Status Checker

    An easy troubleshooting tool that shows the CPU / DRAM / VGA / BOOT operation every time you start up the system. Post Status Checker is an fast and easy way to identify the source of the problem.

    SA icon
    XXL Aluminum Alloy Heatsink
    B550 Phantom Gaming of the motherboard

    Extra large aluminum alloy heat sinks that effectively take away heat from the MOSFET and chipset so that your whole system may perform more stable.

    Sapphire Black PCB

    SA-BlackPCB of the motherboard

    Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.

    High Density Glass Fabric PCB
    SA-HDPCB of the motherboard

    High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.

    2oz Copper PCB

    SA-8PCB of the motherboard

    Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.

    D-SubHDMI
    3 Graphics Outputs

    Complete with all three types of most used connectors! Packed with a D-Sub + DisplayPort + HDMI combo. Plus the HDMI port supports 4K resolution.

    FullSpike
    Full Spike Protection

    Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.

    APPShop
    Live Update & APP Shop

    ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.

    Overview

    The ASRock B550M PRO4 is a Micro ATX motherboard for systems using supported AMD Ryzen processors with an AM4 socket. It combines the AMD B550 chipset with DDR4 memory support, PCIe expansion, M.2 storage, USB connectivity, 7.1-channel audio and Gigabit LAN.


    Key Features

    • Supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series and 3000 G-Series processors.
    • Four DDR4 memory slots support up to 128GB.
    • Hyper M.2 storage support includes PCIe Gen4x4 with supported processors.
    • Rear USB 3.2 Gen2 Type-A and Type-C ports provide 10Gb/s connectivity.
    • Realtek ALC1200 7.1-channel audio includes Nahimic Audio and Sound Tracker.
    • Realtek RTL8111H LAN supports up to 1Gbps.

    Performance

    Memory performance supports DDR4 4733 MHz, with supported speeds varying by processor and memory configuration. The Hyper M.2 socket supports PCIe Gen4x4 up to 64 Gb/s with Vermeer and Matisse, or Gen3x4 up to 32 Gb/s with Cezanne, Renoir and Picasso. Realtek RTL8111H LAN supports up to 1Gbps.


    Design

    The Micro ATX board measures 9.6" x 9.6" and includes RGB lighting. It uses four 288-pin DDR4 memory slots, a 24-pin ATX power connector and an 8-pin 12V power connector.


    Connectivity & Compatibility

    The board uses an AM4 CPU socket and supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series and 3000 G-Series processors. It is not compatible with AMD Athlon processors. A BIOS update might be required for an AMD Zen 3 Ryzen 5000 Series CPU; refer to the ASRock CPU support list.

    Storage connectivity includes six SATA3 6.0Gb/s ports, one Hyper M.2 Socket supporting M Key type 2280 PCIe modules, and one M.2 Socket supporting M Key type 2280 SATA3 or PCIe Gen3 x2 modules. The Key E M.2 socket supports a type 2230 WiFi/BT module. Listed wireless LAN is Wi-Fi 802.11 be, and Windows 11 is supported.

    Rear I/O includes one PS/2 port, one D-Sub port, one HDMI port, one DisplayPort 1.4, one USB 3.2 Gen2 Type-A port, one USB 3.2 Gen2 Type-C port, four USB 3.2 Gen1 ports, two USB 2.0 ports, one RJ-45 LAN port and HD audio jacks. Internal headers support four USB 2.0 ports and four USB 3.2 Gen1 ports.


    Reliability & Durability

    Selected USB and rear I/O ports support ESD protection. ECC support varies by processor, and the memory is un-buffered.


    Specifications

    • Brand: ASRock
    • Series: PRO
    • Model: B550M PRO4
    • Part Number: B550M PRO4
    • CPU Socket: AM4
    • Chipset: AMD B550
    • Memory: 4x288-pin DDR4; maximum 128GB; dual channel; Intel XMP 2.0
    • Expansion: 1 x PCI Express 4.0 x16; 1 x PCI Express 3.0 x16; 1 x PCI Express 2.0 x16; 3 x PCI Express x4; 1 x PCI Express 3.0 x1; 1 x PCI slot
    • Storage: 6 x SATA3 6.0Gb/s; 1 x Hyper M.2; 1 x M.2 Socket
    • Storage RAID: 0/1/10
    • Audio: Realtek ALC1200, 7.1 channels
    • LAN: Realtek RTL8111H, 1Gbps
    • Form Factor: Micro ATX
    • Dimensions: 9.6" x 9.6"

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
    • Read full details
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