MSI · MPN: PRO B550M-P
£96.99
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MSI PRO B550M-P motherboard AMD B550 Socket AM4 ATX
Now £96.99

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Overview

  • Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000 G-Series, 3000 Series, and 3000 G-Series processors
  • Supports DDR4 Memory, up to 4400+ MT/s (OC)
  • Lightning Fast Experience: PCIe 4.0 slot and Lightning Gen4 x4 M.2
  • EZ DIY: EZ Debug LED and EZ Mounting
  • Audio Boost: Reward your ears with studio-grade sound quality
  • MSI Center: A brand-new software which integrates all MSI exclusive tools with user-friendly user interface.

PRO B550M-P is engineered with PCIe 4.0 M.2, Frozr AI Cooling, and Front Type-C, ready for the AMD Ryzen™ 5000 series processors.

The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.

MSI motherboards circuitry ensure the case standoff keep out zones are pure and clean. Moreover, the protective paint is printed around each screw hole to prevent parts from being scratched or damaged to the motherboard.

Once connected to the internet, MSI Driver Utility Installer will detect and present suitable drivers and utilities automatically, you can download and install with just a few clicks. Learn more

EZ DEBUG LED
Onboard LEDs will indicate the source of the problem so you know exactly where to look to get up and running again.

A host of features inject artificial intelligence into key aspects of your computing experience to make smarter, real-time optimizations. The MSI Center offers a clean, minimal interface to customize and manage your PC settings. The AI Engine, for example, automatically adjusts settings based on the applications you're using, ensuring seamless performance.

Core Boost technology combines MSI's premium layout and optimized power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. Not only supporting multi-core CPU, also creating the perfect conditions for your CPU overclocking.

Exclusive MSI Memory Boost technology utilizes an optimized and isolated DDR4 circuit design to ensure pure and undisturbed signals, significantly enhancing performance and efficiency.

Transient Voltage Suppressors (TVS) are safety devices used to protect against excessive voltage. All motherboard models of MSI are equipped with TVS. When the voltage abnormally rises, the TVS switches from a high-resistance state to a low-resistance state, diverting the excessive voltage to ground. This helps prevent circuit damage caused by high voltage.

The 8-pin and 24-pin power connectors of MSI motherboards are all designed with solid pins. The solid pin design allows for a more stable transmission of 12V power to the CPU, even when handling high current loads.

Corrosive resistance IO Shield to help improve static electricity and reduce electromagnetic radiation noise from the system as well as more durable compare to traditional IO Shields.

MSI motherboards prioritize safety with the embedded Overcurrent Protection (OCP), ensuring crucial components such as the USB ports, DDR memory, PWM IC, and CPU are shielded from excessive current. This proactive defense mechanism curtails the risk of damage or malfunction due to power surges, promoting long-term system stability. This commitment to safeguarding your hardware underscores MSI's dedication to producing motherboards that prioritize durability and stability.

The grounding structure of power phases is the MSI's exclusive design. This patented design enables to suppress the electromagnetic interference (EMI) generated by the power phases and helps to efficiently conduct heat to the copper plane with grounding properties.

MSI AI LAN Manager automatically classifies and prioritizes the latency-sensitive applications for online games, giving you the best online gaming experience with low latency.

MSI PRO series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Start games faster, load levels faster and have a real advantage over your enemies.

LIGHTNING GEN 4 PCI-E
MSI lightning Gen 4 PCI-E represents the bandwidth of a x16 interface to 64GB/s that has doubled compared to its previous generation.

REINFORCED,
HEAVY SOLDERED CONNECTIONS

MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage in games counts, Steel Armor shields the point of contact from electromagnetic interference.

MSI motherboards support USB Front Type-C that allows gamers to connect with the latest USB devices. Built up a system with MSI PC case to have the most convenient experience.

Specifications

Processor

Processor manufacturerAMD
Processor socketSocket AM4
Compatible processor seriesAMD Ryzen 5000 Series, AMD Ryzen 4000 Series, AMD Ryzen 3000 Series
Supported processor socketsSocket AM4

Memory

Supported memory typesDDR4-SDRAM
Number of memory slots4
Memory slots typeDIMM
Memory channelsDual-channel
ECC сompatibilityNon-ECC
Supported memory clock speeds2667,2800,2933,3000,3066,3200,3466,3600,3733,3866,4000,4133,4266,4400 MHz
Supported memory clock speed (max)4400 MHz
Maximum internal memory128 GB
Unbuffered memoryYes
Show all 67 specificationsShow fewer specifications

Storage controllers

Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, PCI Express 4.0, PCI Express 3.0, SATA
Number of storage drives supported2
Number of HDDs supported4
RAID supportYes
RAID levels0, 1, 10

Graphics

Parallel processing technology supportNot supported
On-board graphics cardYes

Internal I/O

USB 2.0 connectors4
USB 3.2 Gen 1 (3.1 Gen 1) connectors6
USB 3.2 Gen 2 (3.1 Gen 2) connectors1
Number of SATA III connectors4
Number of SATA connectors4
Total number of SATA connectors4
Front panel audio connectorYes
Front panel connectorYes
CPU fan connectorYes
Chassis intrusion connectorYes
TPM connectorYes
RGB LED pin headerYes

Rear panel I/O ports

USB 2.0 ports quantity6
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity6
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
Ethernet LAN (RJ-45) ports1
VGA (D-Sub) ports quantity1
HDMI ports quantity1
HDMI version2.1
DisplayPorts quantity1
DisplayPort version1.4

Network

Ethernet LANYes
Ethernet interface typeGigabit Ethernet
LAN controllerRealtek 8111H
Wi-FiNo

Features

Component forPC
Motherboard form factorATX
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Audio chipRealtek ALC897
Audio output channels7.1 channels

Expansion slots

PCI Express x1 (Gen 3.x) slots2
PCI Express x16 slots1
PCI Express x16 (Gen 4.x) slots1
PCI Express x16 (Gen 3.x) slots1
Number of M.2 (M) slots2
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation3.0

BIOS

BIOS typeUEFI AMI
BIOS memory size256 Mbit
ACPI version6.0
System Management BIOS (SMBIOS) version2.8

Weight & dimensions

Width243.8 mm
Depth243.8 mm

Videos

MSI DigiME: Immersive Avatar Settings
MSI Mystic LightRGB Lighting
DigiME - The First AI-Driven VTuber Software Suite

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