ASUS PRIME B550M-K AMD B550 Socket AM4 micro ATX

Manufacturer: Asus | Model: 90MB14V0-M0EAY0 | Product ID: 1744
£114.88 (inc. VAT)
Availability: 0 in stock

Product Technical Specification

Processor
Processor manufacturerAMD
Processor socketSocket AM4
Compatible processor seriesAMD Ryzen 3 3rd Gen,AMD Ryzen 5 3rd Gen,AMD Ryzen 7 3rd Gen,AMD Ryzen 9 3rd Gen
Memory
Supported memory typesDDR4-SDRAM
Number of memory slots4
Memory slots typeDIMM
Supported memory clock speeds2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600
Maximum internal memory128
Storage controllers
Supported storage drive interfacesM.2,SATA
Internal I/O
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors1
ATX Power connector (24-pin)Yes
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 quantity2
Ethernet LAN (RJ-45) ports1
PS/2 ports quantity1
HDMI ports quantity1
DVI-D ports quantity1
Network
Ethernet LANYes
LAN controllerRealtek RTL8111H
Wi-FiNo
Features
Motherboard chipsetAMD B550
Motherboard form factorMicro ATX
Motherboard chipset familyAMD
Windows operating systems supportedWindows 10
Expansion slots
PCI Express x1 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Number of M.2 (M) slots2
BIOS
BIOS typeUEFI AMI
BIOS memory size256
Logistics data
Harmonized System (HS) code84733020
Weight & dimensions
Width244
Depth244
Height51
Other features
Weight785

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Sun 07th Dec 2025 to Wed 10th Dec 2025
Fast & Tracked by Courier
£6.95
Fast & Tracked by Courier

Fast & Tracked by Courier (UK)

Estimated delivery date: Sat 06th Dec 2025 to Mon 08th Dec 2025
View all Delivery Options & International Rates
ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.

Tune It Your Way

Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity.

Cooler by Design

Prime B550M-K is engineered with an array of hybrid fan headers and features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS, ensuring your rig stays cool and stable under intense workloads.

Build on a Solid Foundation
Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

Little Things Make a Big Difference
Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a uniquely personal look.

Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.
Processor
Processor manufacturerAMD
Processor socketSocket AM4
Compatible processor seriesAMD Ryzen 3 3rd Gen,AMD Ryzen 5 3rd Gen,AMD Ryzen 7 3rd Gen,AMD Ryzen 9 3rd Gen
Memory
Supported memory typesDDR4-SDRAM
Number of memory slots4
Memory slots typeDIMM
Supported memory clock speeds2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600
Maximum internal memory128
Storage controllers
Supported storage drive interfacesM.2,SATA
Internal I/O
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors1
ATX Power connector (24-pin)Yes
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 quantity2
Ethernet LAN (RJ-45) ports1
PS/2 ports quantity1
HDMI ports quantity1
DVI-D ports quantity1
Network
Ethernet LANYes
LAN controllerRealtek RTL8111H
Wi-FiNo
Features
Motherboard chipsetAMD B550
Motherboard form factorMicro ATX
Motherboard chipset familyAMD
Windows operating systems supportedWindows 10
Expansion slots
PCI Express x1 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
Number of M.2 (M) slots2
BIOS
BIOS typeUEFI AMI
BIOS memory size256
Logistics data
Harmonized System (HS) code84733020
Weight & dimensions
Width244
Depth244
Height51
Other features
Weight785

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a very flexible and hassle free returns policy. If for whatever reason you are not happy with the item purchased you can return it to us within 12months for a refund (for unused and unopened items) or within 30 days on opened and used items for a refund. This applies to items purchased direct through Buykingston  only.

Our 30 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items opened and used and that are returned in a resellable condition.

Our 365 Day Returns Money Back Guarantee Satisfaction Guarantee:
For items that remain sealed and unused.

Some items are excluded from our moneyback guarantee unless they have developed a fault. These include;

- Headphones
- Earphones
- Custom made and designed products such as flash memory products with custom logo’s on them. E,g USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
On opened items 30 days from date of receipt or expected date of receipt on non tracked items.
On unopened items 365 days.

How do i go about returning my order?
Please contact us via our contact page with your order number where we will present you with an RMA number and returns label.

Do i need to contact you before returning my order?
Yes, to obtain an RMA number.

Does my item have to include its original packaging?
Yes for items that fall within our 30 day money back guarantee and our 365 day returns. Of course for faulty items we realise you may no longer have the packaging.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer direct for assistance.

Please ensure you have read and comply in full with Section 11 & 13 of our terms and conditions which you can read here in full.