Asrock B550M Pro4 AMD B550 Socket AM4 micro ATX

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  • AMD B550
  • 4 x DDR4 DIMM
  • 7.1 CH HD Audio
  • Gigabit LAN
  • 256Mb AMI UEFI
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SKU #: B550M PRO4
EAN #: 4710483931598
UNSPSC #: 43201513
IT’S TIME FOR B550 MOTHERBOARDS
Everything You Need For Computing

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.

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
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.

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!

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.

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.

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.

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.

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.

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.
SKU B550M PRO4
EAN 4710483931598
Specification
Internal I/O
Number of M.2 (M) slots3
Front panel connectorYes
12V power connectorYes
Supported storage drive interfacesM.2, SATA III
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
TPM connectorYes
Number of SATA II connectors6
Number of COM connectors1
Number of chassis fan connectors4
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
Technical details
Number of displays supported3
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Supported processor socketsSocket AM4
PC health monitoringCPU, Fan, Temperature, Voltage
Parallel processing technology supportCrossFireX, Quad-GPU CrossFireX
HDMI version2.1
Motherboard form factormicro ATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
RAID levels0, 1, 10
Supported processor socketsSocket AM4
PC health monitoringCPU, Fan, Temperature, Voltage
CertificationFCC, CE ErP/EuP ready (ErP/EuP ready power supply is required)
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 3000 Series
Supported processor socketsSocket AM4
Maximum number of SMP processors1
Processor socketSocket AM4
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR4-SDRAM
Memory channelsDual-channel
Supported memory clock speeds2133,2400,2667,2933,3200,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533,4600,4666,4733 MHz
Supported memory module capacities4GB, 8GB, 16GB, 32GB
Maximum internal memory128 GB
Unbuffered memoryYes
Supported memory clock speed (max)4733 MHz
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, SATA III
RAID levels0, 1, 10
RAID supportYes
Graphics
Number of displays supported3
Parallel processing technology supportCrossFireX, Quad-GPU CrossFireX
Maximum resolution5120 x 2880 pixels
HDCPYes
DirectX version12.0
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
DisplayPort version1.4
USB 2.0 ports quantity2
VGA (D-Sub) ports quantity1
PS/2 ports quantity1
Microphone inYes
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DisplayPorts quantity1
Network
Ethernet LANYes
Wi-FiNo
Wake-on-LAN readyYes
LAN controllerRealtek RTL8111H
Ethernet interface typeGigabit Ethernet
Features
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Supported processor socketsSocket AM4
PC health monitoringCPU, Fan, Temperature, Voltage
CertificationFCC, CE ErP/EuP ready (ErP/EuP ready power supply is required)
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Audio chipRealtek ALC1200
Harmonized System (HS) code84733020
Expansion slots
Number of M.2 (M) slots3
PCI Express x1 (Gen 3.x) slots1
PCI Express x16 (Gen 3.x) slots1
PCI Express x16 (Gen 4.x) slots1
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
ACPI version5.1
System Management BIOS (SMBIOS) version2.3
Video
Maximum resolution5120 x 2880 pixels
HDCPYes
DirectX version12.0
Certificates
CertificationFCC, CE ErP/EuP ready (ErP/EuP ready power supply is required)
Software
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Drivers includedYes
Logistics data
Harmonized System (HS) code84733020
Weight & dimensions
Height70 mm
Weight465 g
Width244 mm
Depth244 mm
Packaging content
Drivers includedYes
Cables includedSATA
Other features
Height70 mm
Weight465 g
Manufacturer Asrock
In Stock Y