Asrock · MPN: 90-MXBE90-A0UAYZ
£85.99
inc. VAT
Spread the cost with Klarna, Clearpay, PayPal or FloatFrom 3 interest-free payments of £28.66 See options

Credit subject to status. 18+, UK residents only. See each provider for terms.

Key specs

  • Maximum resolution5120 x 2880 pixels
  • Weight465 g
All specifications

In stock

FREE delivery

Express £9.99

More payment options Snap Finance on orders over £250

Snap Finance on orders over £250

Pay £1 deposit · Pay in 4 available · Decision in minutes

Soft check, won't affect your credit score. Representative 29.9% APR. Choose Snap Finance at checkout.

How Snap Finance works

We accept all of these. Choose the one you want at checkout.

  • American Express
  • Apple Pay
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
  • Express checkout Shop Pay, Apple Pay, Google Pay and PayPal
  • Card Visa, Mastercard, American Express and Maestro
  • Pay later Snap Finance, Klarna, Clearpay, PayPal Pay in 3 and more
Go to checkout with this item

Secure checkout. You can add a discount code or gift card on the next page.

Price drop alert

Asrock B550M Phantom Gaming 4 AMD B550 Socket AM4 Micro ATX Motherboard
Now £85.99

We'll email you if the price of this item drops in the next 90 days.

Overview

  • Premium 50A Power Choke
  • Sapphire Black PCB
  • High Density Glass Fabric PCB
  • 2oz Copper PCB
  • ASRock Hyper M.2 (PCIe Gen4x4)
  • ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
  • ASRock Live Update & APP Shop

Phantom Gaming is designed by gamers and for gamers! Underneath its relentless appearance lie plentiful gaming oriented features and excellent gaming capabilities. It’s all about bringing a new gaming experience to gamers!

8 Power Phase Design
Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it enhanced performance with the lowest temperature for advanced gamers.

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.

A SOLID M.2-SOLUTION PERFORMER
Dual M.2 For SSD, Supports Type 2280 M.2
Ready for higher capacity and even faster Type 2280 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.

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.

*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.

Dual Graphics Outputs
Complete with two types of most used connectors! Packed with a HDMI + DisplayPort combo, you have more graphics output options now.

HDMI 4k @60Hz
Supports the most recent HDMI 4K 60Hz graphics output specification. With the larger bandwidth and increased frame rate, the motion on your screen becomes more fluid and less blurry.

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.

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

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.

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.

Specifications

Processor

Processor manufacturerAMD
Processor socketSocket AM4
Compatible processor seriesAMD Ryzen 3000 Series
Maximum number of SMP processors1

Memory

Supported memory typesDDR4-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityECC & Non-ECC
Supported memory clock speeds2133,2400,2667,2933,3200,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533 MHz
Maximum internal memory128 GB
Unbuffered memoryYes
Show all 66 specificationsShow fewer specifications

Storage controllers

Supported storage drive typesHDD & SSD
Supported storage drive interfacesSATA III
Number of storage drives supported6
RAID supportYes

Graphics

Maximum resolution5120 x 2880 pixels
HDCPYes
DirectX version12.0

Internal I/O

USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
Number of SATA III connectors4
Front panel audio connectorYes
ATX Power connector (24-pin)Yes
CPU fan connectorYes
Number of chassis fan connectors3
12V power connectorYes
TPM connectorYes
RGB LED pin headerYes

Rear panel I/O ports

USB 2.0 ports quantity2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
Ethernet LAN (RJ-45) ports1
PS/2 ports quantity1
HDMI ports quantity1
HDMI version2.1
DisplayPorts quantity1
DisplayPort version1.4

Network

Ethernet LANYes
Ethernet interface typeGigabit Ethernet
LAN controllerRealtek RTL8111H
Wake-on-LAN readyYes
Wi-FiNo
Top Wi-Fi standardNot available

Features

Component forPC
Motherboard form factormicro ATX
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Audio chipRealtek ALC887 / Realtek ALC897
Audio output channels7.1 channels
PC health monitoringFan, Temperature, Voltage
Windows operating systems supportedWindows 10 x64
Overclocking featuresFCC, CE
ErP/EuP

Expansion slots

PCI Express x1 (Gen 3.x) slots1
PCI Express x16 (Gen 4.x) slots1
PCI Express x16 (Gen 3.x) slots3
Number of M.2 (M) slots2

BIOS

BIOS typeUEFI AMI
BIOS memory size256 Mbit
ACPI version5.1
System Management BIOS (SMBIOS) version2.3

Weight & dimensions

Width244 mm
Depth244 mm
Height70 mm

Packaging content

Cables includedSATA
Drivers includedYes

Other features

Weight465 g

Manuals & downloads

Delivery & returns

Delivery

  • FREE standard delivery on orders over £50, otherwise £4.95 (3–5 working days).
  • Express delivery £9.99 (1–3 working days) on selected products, UK mainland.
  • PlayStation and Arozzi products use a 5–7 working-day service.
  • Orders are processed within 24 hours, Monday to Friday excluding bank holidays. All deliveries must be signed for.

Returns

  • Changed your mind? Tell us within 14 days of receiving your item, then return it within a further 14 days, unused and in its original packaging. A minimum £9.99 collection fee applies.
  • Faulty or damaged on arrival? Contact us within 48 hours of delivery.
  • Custom-built PCs can only be returned if faulty. Opened headphones, earphones and AirPods can't be returned for hygiene reasons.

Full delivery information · Full returns policy