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Asrock B550M Steel Legend AMD B550 Socket AM4 micro ATX

ASRock 90-MXBCU0-A0UAYZ Supports 3rd Gen AMD AM4 Ryzen, 4

Quick Code: Q49857Part Code: 90-MXBCU0-A0UAYZASRock
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ASRock 90-MXBCU0-A0UAYZ
 
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Asrock B550M Steel Legend AMD B550 Socket AM4 micro ATX

ASRock 90-MXBCU0-A0UAYZ Supports 3rd Gen AMD AM4 Ryzen, 4
Quick Code: Q49857Part Code: 90-MXBCU0-A0UAYZ
  • 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
  • 10 Power Phase Design, Dr. MOS
  • 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
  • 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
  • 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
  • AMD CrossFireXâ„¢
  • Dragon 2.5G LAN
  • Graphics Output Options: HDMI, DisplayPort
  • Supports 3rd Gen AMD AM4 Ryzenâ„¢ / Future AMD Ryzenâ„¢ Processors
  • Supports DDR4 4733+ (OC)
1 Port

Asrock B550M Steel Legend AMD B550 Socket AM4 micro ATX

ASRock 90-MXBCU0-A0UAYZ Supports 3rd Gen AMD AM4 Ryzen, 4
Quick Code: Q49857Part Code: 90-MXBCU0-A0UAYZ
Quick Code: Q49857Part Code: 90-MXBCU0-A0UAYZASRock
Quick Code: Q49857
In Stock

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Returns can be processed online or you can contact our customer service team. For more information see our returns section
RRP £192.00 SAVE 38%
£99.99 ex. VAT
£119.99

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Overview



Steel Legend represents the philosophical state of rock-solid durability and irresistible aesthetics. Built around most demanding specs and features, the Steel Legend series aims at daily users and mainstream enthusiasts! Providing a strong array of materials/components to ensure a stable and reliable performance.

STEEL FOREVER
Get Endless Performance Possibilities with Steel Style

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.

Dr. MOS
Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.

Premium 60A Power Choke
Compared to traditional chokes, ASRock’s premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Hi-Density Power Connector
Reduces 23% power loss and decreases the connector’s temperature by 22 degrees Celsius.
8+4 12V Power Connectors
24-pin ATX Power Connector

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.

Dragon 2.5 Gb's LAN
The intelligent 2.5Gb's LAN platform is built for maximum networking performance for the demanding requirements of home networking, content creators, online gamers and high-quality streaming media. Boost networking performance up to 2.5X the bandwidth compared to the standard gigabit Ethernet, you’ll enjoy the faster and uncompromised connectivity experience for gaming, file transfers and backups.

Automatically detects and accelerates game traffic ahead of other network traffic for smoother, stutter-free in-game performance and the competitive edge.

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.




At-a-glance



  • 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi

  • 10 Power Phase Design, Dr. MOS

  • 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)

  • 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)

  • 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio

  • AMD CrossFireXâ„¢

  • 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.

  • Dragon 2.5G LAN

  • Everything will wear off in time, but gold looks better! Gold audio jack provides stable sound transmission!

  • Graphics Output Options: HDMI, DisplayPort

  • 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.

  • Supports 3rd Gen AMD AM4 Ryzenâ„¢ / Future AMD Ryzenâ„¢ Processors

  • Supports DDR4 4733+ (OC)




Reasons to buy


  • 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
  • 10 Power Phase Design, Dr. MOS
  • 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
  • 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
  • 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
  • AMD CrossFireXâ„¢
  • 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.
  • Dragon 2.5G LAN
  • Everything will wear off in time, but gold looks better! Gold audio jack provides stable sound transmission!
  • Graphics Output Options: HDMI, DisplayPort
  • 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.
  • Supports 3rd Gen AMD AM4 Ryzenâ„¢ / Future AMD Ryzenâ„¢ Processors
  • Supports DDR4 4733+ (OC)

Specification


Technical Description: Supports 3rd Gen AMD AM4 Ryzen, 4 x DIMM, DDR4 4733+ (OC), 7.1 CH HD Audio, Dragon 2.5G LAN

Back panel I/O ports
WiFi-AP antenna jack:
2
S/PDIF out port:S/PDIF (Sony/Philips Digital Interconnect Format) is a digital audio interconnect used in consumer audio equipment over relatively short distances. The signal is transmitted over either a coaxial cable with RCA connectors or a fibre optic cable with TOSLINK connectors.
Yes
Microphone in:The socket where a microphone is connected to the device.
Yes
DisplayPort version:
1.4
DisplayPorts quantity:Number of DisplayPorts. A DisplayPort is a digital display interface developed by the Video Electronics Standards Association (VESA). The interface is primarily used to connect a video source to a display device such as a computer monitor, though it can also be used to carry audio, USB, and other forms of data.
1
HDMI ports quantity:The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.
1
PS/2 ports quantity:The number of PS/2 connectors for keyboards and mice. Its name comes from the IBM Personal System/2.
1
Ethernet LAN (RJ-45) ports:Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet.
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity:
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
4
USB 2.0 ports quantity:Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
2

BIOS
Plug and Play:Indicates whether this product supports is "plug and play". Plug and play is hardware or software that, after being installed ("plugged in"), can immediately be used ("played with"), as opposed to hardware or software which requires configuration.
Yes
System Management BIOS (SMBIOS) version:
2.3
Clear CMOS button:
Yes
ACPI version:
5.1
BIOS memory size:
256 Mbit
BIOS type:The BIOS (Basic Input/Output System) initializes and tests system hardware components, and loads a bootloader or an operating system from a mass memory device. The BIOS additionally provides abstraction layer for the hardware, i.e. a consistent way for application programs and operating systems to interact with the keyboard, display, and other input/output devices. There are several types of BIOS, including the motherboard ROM BIOS, video BIOS, drive controller BIOS, network adapter BIOS, and SCSI adapter BIOS.
UEFI AMI

Expansion slots
Number of M.2 (M) slots:
2
PCI Express x16 (Gen 3.x) slots:Places where PCI Express x16 (Gen 3.x) are placed inside and connected to the computer motherboard.
1
PCI Express x16 (Gen 4.x) slots:
1
PCI Express x1 (Gen 3.x) slots:
1

Features
Windows operating systems supported:Windows vesions wich can be used with the device.
Windows 10 x64, Windows 11 x64
Power source type:What the power source is.
ATX
PC health monitoring:
CPU, Fan, Temperature, Voltage, Water cooling
Audio output channels:An audio output channel is an electric circuit which acts as a path for a signal produced by a device. A device may have several audio output channels.
7.1 channels
Audio chip:
Realtek ALC1200
Motherboard chipset:The chipset connects the microprocessor to the rest of the motherboard.
AMD B550
Motherboard chipset family:The category of motherboard chipset e.g. Intel, AMD.
AMD
Motherboard form factor:Design of the motherboard (ATX, BTX etc).
micro ATX
Component for:What this product is used as a part of (component for).
PC

Graphics
Number of displays supported:The number of displays that can be used with this product.
2
HDCP:High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection to prevent copying of digital audio and video content as it travels across connections.
Yes
Maximum resolution:The maximum number of pixels that can be displayed in the image. It is usually quoted as width × height,: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels.
5120 x 2880 pixels
Parallel processing technology support:Parallel processing technology is the simultaneous use of more than one CPU or processor core to execute a program or multiple computational threads. Ideally, parallel processing makes programs run faster because there are more engines (CPUs or Cores) running it. In practice, it is often difficult to divide a program in such a way that separate CPUs or cores can execute different portions without interfering with each other. Most computers have just one CPU, but some models have several, and multi-core processor chips are becoming the norm. There are even computers with thousands of CPUs.
CrossFireX, Quad-GPU CrossFireX

Internal I/O
RGB LED pin header:
Yes
12V power connector:
Yes
TPM connector:
Yes
EPS power connector (8-pin):
Yes
Peripheral (Molex) power connectors (4-pin):White 4-pinned connector used to connect a peripheral to the power supply.
2
Number of chassis fan connectors:
4
CPU fan connector:
Yes
ATX Power connector (24-pin):
Yes
Front panel connector:
Yes
Front panel audio connector:
Yes
Number of SATA III connectors:Serial ATA (Advanced Technology Attachment) (SATA) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives and optical drives. SATA III (revision 3.x) interface, formally known as SATA 6Gb/s, is a third generation SATA interface running at 6.0Gb/s. The bandwidth throughput, which is supported by the interface, is up to 600MB/s. This interface is backwards compatible with SATA 3 Gb/s interface.
6
USB 3.2 Gen 1 (3.1 Gen 1) connectors:
2
USB 2.0 connectors:The end of a cable with a USB 2.0 connector. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), in addition to the "USB 1.x Full Speed" signaling rate of 12 Mbit/s. USB 2.0 connectors are usually colored black.
2

Logistics data
Harmonized System (HS) code:
84733020

Memory
Unbuffered memory:
Yes
Maximum internal memory:The maximum internal memory which is available in the product.
128 GB
Supported memory module capacities:
4GB, 8GB, 16GB, 32GB
Supported memory clock speed (max):
4533 MHz
Supported memory clock speeds:Memory clock speed is the time it takes for a computer to complete basic operations. It refers to the computer's processing speed and is measured in hertz. It is however not such a reliable measure of a computer's speed as it doesn't take into account other factors like RAM and cache size.
2133,2400,2667,2933,3200,3333,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533 MHz
Non-ECC:
Yes
ECC:ECC means Error Correction Code, and it is memory that is able to detect and correct some memory errors without user intervention.
Yes
Memory slots type:A memory slot, also known as a memory socket or RAM slot, is what allows computer memory (RAM) to be inserted into the computer. Depending on the motherboard, there will usually be 2 to 4 memory slots (sometimes more on high-end motherboards). The most common types of RAM are SDRAM and DDR for desktop computers and SODIMM for laptop computers, each having various types and speeds.
DIMM
Number of memory slots:
4
Supported memory types:Types of memory which can be used with the product.
DDR4-SDRAM

Network
Wi-Fi:Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.
No
Wake-on-LAN ready:
Yes
LAN controller:
Dragon RTL8125BG
Ethernet interface type:
2.5 Gigabit Ethernet
Ethernet LAN:An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Yes

Networking
Wi-Fi:Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.
No
Wake-on-LAN ready:
Yes
LAN controller:
Dragon RTL8125BG
Ethernet interface type:
2.5 Gigabit Ethernet
Ethernet LAN:An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Yes

Other features
Number of M.2 (E) slots:
1
Quick installation guide:
Yes
Weight:Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
465 g

Packaging content
Drivers included:
Yes
Cables included:
SATA

Processor
Supported processor sockets:The sockets (plugs) for processors that are supported (can be used) by the device.
Socket AM4
Maximum number of SMP processors:
1
Compatible processor series:A processor which is compatible with this device, belongs to a 'series' which is part of 'family' e.g Celeron D, Celeron G, Celeron M, or, in some cases, is the same as 'family'.
3rd Generation AMD Ryzenâ„¢ 3, 3rd Generation AMD Ryzen 5, 3rd Generation AMD Ryzenâ„¢ 7, 3rd Generation AMD Ryzenâ„¢ 9
Processor socket:Mechanical component(s) that provides mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows the processor to be replaced without soldering.
Socket AM4
Processor manufacturer:The manufacturer that produced the processor.
AMD

Rear panel I/O ports
WiFi-AP antenna jack:
2
S/PDIF out port:S/PDIF (Sony/Philips Digital Interconnect Format) is a digital audio interconnect used in consumer audio equipment over relatively short distances. The signal is transmitted over either a coaxial cable with RCA connectors or a fibre optic cable with TOSLINK connectors.
Yes
Microphone in:The socket where a microphone is connected to the device.
Yes
DisplayPort version:
1.4
DisplayPorts quantity:Number of DisplayPorts. A DisplayPort is a digital display interface developed by the Video Electronics Standards Association (VESA). The interface is primarily used to connect a video source to a display device such as a computer monitor, though it can also be used to carry audio, USB, and other forms of data.
1
HDMI ports quantity:The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.
1
PS/2 ports quantity:The number of PS/2 connectors for keyboards and mice. Its name comes from the IBM Personal System/2.
1
Ethernet LAN (RJ-45) ports:Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet.
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity:
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
4
USB 2.0 ports quantity:Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
2

Storage controllers
RAID levels:RAID is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the specific level of redundancy and performance required.
0, 1, 10
RAID support:The device uses RAID, which is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the specific level of redundancy and performance required.
Yes
Supported storage drive interfaces:
M.2, SATA III
Supported storage drive types:
HDD & SSD

Weight & dimensions
Height:The measurement of the product from head to foot or from base to top.
70 mm
Depth:The distance from the front to the back of something.
244 mm
Width:The measurement or extent of something from side to side.
244 mm


Fast & Reliable Delivery
  • Free Standard Delivery on orders over £100 within 5 working days.
  • Priority Delivery options: 3 working days for £4.98, or next working day for £6.99.
  • Free Next Working Day Delivery for eligible orders, achieving a 95% success rate.
  • Orders placed before 4:00 pm Mon-Fri are dispatched the same day.
  • Delivery may require someone present to accept between 8 am and 6 pm, Mon-Fri.
  • UK Only: Sorry, international delivery is not available.

Flexible & Secure Returns
  • 14-Day Returns for unwanted goods.
  • 30-Day Returns for faulty items, with extended support for issues arising post-30 days under the manufacturer's warranty.
  • Hassle -free returns online or via customer service.

Special Notes:
  • Delivery exceptions for remote areas may incur additional charges and longer delivery times.
  • Missed deliveries? No worries. Two attempts made, with an option to collect from your local depot.
  • Oversize or overweight items might need an extra charge; we'll inform you in advance.

Customer First Approach
  • We understand things don't always go as planned. Whether it's a delivery query or return, our dedicated team at MoreCoCo is here to ensure your shopping experience is smooth and satisfying. Contact us for any assistance or inquiries.

Our Promise
  • At MoreCoCo, your satisfaction is our priority. We're committed to delivering quality and reliability, making your shopping experience as convenient and trustworthy as possible.

Product details


90-MXBCU0-A0UAYZ ASRock 4710483931505 B089W2Q2QC

Supports 3rd Gen AMD AM4 Ryzen, 4 x DIMM, DDR4 4733+ (OC), 7.1 CH HD Audio, Dragon 2.5G LAN

£119.99 and In stock

SKU90-MXBCU0-A0UAYZ

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