Asrock · MPN: 90-MXBDH0-A0UAYZ
£123.99
inc. VAT
Spread the cost with Klarna, Clearpay, PayPal or FloatFrom 3 interest-free payments of £41.33 See options

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

Key specs

  • Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
  • 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-ITX/ac AMD B550 Socket AM4 mini ITX
Now £123.99

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

Overview

  • Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors
  • Supports DDR4 4733+ (OC)
  • 1 PCIe 4.0 x16
  • Graphics Output: DisplayPort, HDMI
  • 7.1 CH HD Audio (Realtek ALC887 Audio Codec)
  • 4 SATA3, 1 Hyper M.2 (PCIe Gen4 x4 & SATA3)
  • 6 USB 3.1 Gen1 (2 Front, 3 Rear Type-A, 1 Rear Type-C)
  • Realtek Gigabit LAN
  • Intel® 802.11ac WiFi + BT 4.2

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 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.

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.

Dual Band 802.11ac WiFi
No one has time for weak WiFi signals and sluggish internet! That's why this motherboard comes with a 802.11ac WiFi (2.4G / 5G WiFi) module which supports wireless networks and Bluetooth v4.2.

Hyper M.2 (PCIe Gen4 x4)
Supports the next generation PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.

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.

Dual USB 3.2 Gen1 (Type-A + Type-C)
This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen1 ports built on the rear i/o for supporting next generation USB 3.2 Gen1 devices and to deliver up to 5 Gbps data transfer rates.

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.

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

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

Memory

Unbuffered memoryYes
Maximum internal memory64 GB
Supported memory clock speeds2133,2400,2667,2933,3200,3466,3600,3733,3800,3866,4000,4133,4200,4266,4333,4400,4466,4533,4600 MHz
ECC сompatibilityECC & Non-ECC
Memory channelsDual-channel
Memory slots typeDIMM
Number of memory slots2
Supported memory typesDDR4-SDRAM
Show all 54 specificationsShow fewer specifications

Storage controllers

Supported storage drive interfacesM.2, SATA III

Graphics

DirectX version12.0
HDCPYes
Graphics cardRadeon Vega
Graphics card familyAMD
On-board graphics cardYes

Internal I/O

RGB LED pin headerYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
Front panel audio connectorYes
Number of SATA III connectors4
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
USB 2.0 connectors2

Rear panel I/O ports

DisplayPort version1.4
DisplayPorts quantity1
HDMI ports quantity1
PS/2 ports quantity1
Ethernet LAN (RJ-45) ports1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity3
USB 2.0 ports quantity2

Network

Bluetooth version4.2
BluetoothYes
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Wi-FiYes
Wake-on-LAN readyYes
LAN controllerRealtek RTL8111H
Ethernet interface typeGigabit Ethernet
Ethernet LANYes

Features

Audio output channels7.1 channels
Audio chipRealtek ALC887
Motherboard chipsetAMD B550
Motherboard chipset familyAMD
Motherboard form factormini ITX
Component forPC

BIOS

BIOS typeUEFI AMI

Weight & dimensions

Height70 mm
Depth170 mm
Width170 mm

Packaging content

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