ASROCK 

ASROCK B550 PRO4 Socket AM4/ AMD B550/ DDR4/ Quad CrossFireX/ SATA3&USB3.2/ M.2/ ATX Motherboard

Mfg Part Number:  B550 PRO4  
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Price: $161.51 + Free Shipping
Quantity:
More to Come
Last Updated: Jan 20, 2026
No Sales Tax except these states
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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

ASRock motherboards deliver stunning performance and superior aesthetics to rule your own colorful lighting way! ASRock offers a very comprehensive control to perform the built-in RGB LEDs or the connected LED strips, CPU fans, coolers, chassis and any RGB devices smoothly. Devices can be synchronized across the Polychrome RGB Sync-certified accessories as well.

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.

AMD StoreMI Technology

A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive, AMD StoreMI technology "combines" these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds.

Main Specification
General Information
Manufacturer ASRock, Inc
Manufacturer Part Number B550 PRO4
Manufacturer Website Address http://www.asrock.com
Brand Name ASRock
Product Series PRO
Product Model B550 Pro4
Product Name B550 Pro4 Desktop Motherboard
Product Type Desktop Motherboard
Processor & Chipset
Chipset Manufacturer AMD
Chipset Model B550
Total Processor Supported 1
Processor Socket Socket AM4
Processor Supported Ryzen 9
Processor Supported Ryzen 5 Pro
Processor Supported Ryzen 7
Processor Supported Ryzen 3
Processor Supported Ryzen 5
Processor Supported Ryzen 3 PRO
Processor Supported Ryzen 7 PRO
Multi GPU Supported CrossFireX
Memory
Number of Memory Slots 4
Memory Form Factor UDIMM
Memory Form Factor DIMM
Maximum Memory Supported 128 GB
Memory Technology DDR4 SDRAM
Memory Speed Supported 3733 MHz
Memory Speed Supported 4400 MHz
Memory Speed Supported 3866 MHz
Memory Speed Supported 4333 MHz
Memory Speed Supported 4533 MHz
Memory Speed Supported 2133 MHz
Memory Speed Supported 2667 MHz
Memory Speed Supported 4266 MHz
Memory Speed Supported 3800 MHz
Memory Speed Supported 4466 MHz
Memory Speed Supported 2400 MHz
Memory Speed Supported 4600 MHz
Memory Speed Supported 4000 MHz
Memory Speed Supported 3600 MHz
Memory Speed Supported 4733 MHz
Memory Speed Supported 4133 MHz
Memory Speed Supported 3466 MHz
Memory Speed Supported 4200 MHz
Memory Speed Supported 2933 MHz
Memory Speed Supported 3200 MHz
Memory Speed Supported 4666 MHz
I/O Controller
Controller Type Serial ATA/600
RAID Supported Yes
RAID Levels 0
RAID Levels 1
RAID Levels 10
Video
Onboard Video CPU Dependent Video
Audio
Audio Channels 7.1
Network & Communication
Gigabit Ethernet Yes
I/O Expansions
Total Number of Expansion Slots 4
Total Number of PCI Express Slots 4
Number of PCI Express x1 Slots 2
Number of PCI Express x16 Slots 2
Interfaces/Ports
Total Number of USB Ports 6
Number of USB 3.2 Ports 6
VGA Yes
HDMI Yes
Number of Network (RJ-45) Ports 1
Onboard Interfaces
Number of SATA Interfaces 6
Number of M.2 Interfaces 3
Total Number of Onboard USB Ports 6
Number of Onboard USB 2.0 Ports 4
Number of Onboard USB 3.2 Ports 2
Physical Characteristics
Form Factor ATX
Width 12"
Depth 9.6"
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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