Well-balanced 2020 ATX multi-purpose motherboard with AMD AM4 socket and mid-range B550 chipset. Designed to complete gaming systems, high-performance universal home PCs and entry-level workstations. Thanks to the reinforced PCI-E slot connector, it can work with massive and large-sized top-end discrete gaming video cards. It is positioned as a product of the middle price category.

Guaranteed compatible with AMD Ryzen 3000 (Matisse/Matisse Refresh, 7nm) and Ryzen 4000G (Renoir, 7nm) APUs. Unlike the previous generation models based on the B450 chipset), MSI B550-A PRO motherboard fully supports the high-speed PCI-E Gen 4.0 system interface, which allows you to 100% increase the speed of loading textures into progressive models of discrete graphics cards and speed up the exchange data with fast NVMe SSDs. With four DDR4 DIMM slots, you can install an impressive maximum total amount of RAM (up to 128 GB), which is more than enough for gaming, streaming and solving any household/professional tasks. It is also worth noting the presence of a high-speed network GbE LAN adapter Realtek 8111H and two digital video outputs (HDMI, DisplayPort).

All specifications

Specifications B550-A PRO

Main
Features	gaming for overclocking
Socket	AMD AM4
Form factor	ATX
VRM heatsink
Size (HxW)	305x244 mm


Chipset
Chipset	AMD B550
BIOS	Ami
UEFI BIOS


RAM
DDR4	4 slot(s)
Memory module	DIMM
Operation mode	2 channel
Max. clock frequency	4400 MHz
Max. memory	128 GB
XMP


Drive interface
SATA 3 (6Gbps)	6
M.2 connector	2
M.2	1xSATA/PCI-E 4x, 1xPCI-E 4x
M.2 SSD cooling
Integrated RAID controller	/ RAID 0, RAID 1 and RAID 10 /


Expansion slots
1x PCI-E slots	2
PCI-E 16x slots	2
PCI Modes	16x/4x
PCI Express	4.0
CrossFire (AMD)
Steel PCI-E connectors	/ PCI-E 4.0 /

Internal connections
TPM connector
USB 2.0	2
USB 3.2 gen1	1
USB C 3.2 gen1	1
RGB LED strip	3 / 2x3-pin RAINBOW LED, 1x4-pin RGB LED /


Video outputs
HDMI output
DisplayPort


Integrated audio
Audiochip	Realtek ALC892
Sound (channels)	7.1


Network interfaces
LAN (RJ-45)	1 Gbps
LAN ports	1
LAN controller	Realtek 8111H


External connections
USB 2.0	4
USB 3.2 gen1	2
USB 3.2 gen2	1
USB C 3.2 gen2	1
PS/2	1
BIOS FlashBack


Power connectors
Main power socket	24 pin
CPU power	8 pin
Fan power connectors	8
CPU Fan 4-pin	1
CPU/Water Pump Fan 4-pin	1
Chassis/Water Pump Fan 4-pin	6


Official Website	msi.com
Added to E-Catalog	may 2020

Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
Catalog MSI 2024 - new products, best sales and most actual models MSI.

Buy MSI B550-A PRO

All prices 12 →

When you make a purchase through links on our site, we may earn an affiliate commission.


	MSI B550-A PRO ProSeries Motherboard AMD AM4 DDR4 PCIe 40 SATA 6Gb/s M2 USB 32 Gen 2 HDMI/DP ATX Audio Boost rewards your ears with studio-quality audio for immersive gaming experiences.Premium Thermal Solution: 7W/mk heat... moresink thermal pad and 57g thick copper PCB.BIOS button allows users to flash BIOS even without CPU or memory.Powerful Design: Core Boost, Digital PWM IC, 56.7g thickened copper PCB, Creator Genie, DDR4 Boost Supports DDR4 memory, up to 4400 MHz (OC) Quick Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2 Premium Thermal Solution: Extended heatsink with extra thermal pad and 7W/mK buffer, and M.2 Shield Frozr are designed for high performance system and non-stop work Powerful Design: Core Boost, Digital PWM IC, 56.7g PCB, Creator Genie, DDR4 Boost Amazon.co.uk Delivery: to United Kingdom Report	£111.07 Buy in shop

	Msi 911-7C56-08S MSI B550-A PRO.Processor manufacturer:AMD, Processor socket:Socket AM4, Compatible processor:AMD Ryzen 3 3rd Gen, 3rd Generat... moreion AMD Ryzen 5, 3rd Generation AMD Ryzen 7, 3rd Generation AMD.Supported memory types:DDR4-SDRAM, Memory slot type:DIMM, Supported memory clock speeds:1866,2133,2400,2667,2800,2933,3000,3066,3200,3466,3600,3733,3866, 4000,4133,4266,4400,4800 MHz.Supported storage drive interfaces:Serial ATA III, Supported storage drive types:HDD & SSD.Support for parallel processing:2-Way CrossFireX, Maximum graphics adapter memory:16000 MB, Maximum resolution:4096 x 2160 Pixels.Ethernet interface type:Gigabit Ethernet, LAN Controller:Realtek 8111H.Specifications:-Processor manufacturer:AMD.-Processor socket:Socket AM4.-Compatible processor:AMD Ryzen 3 3rd Gen, 3rd Generation AMD Ryzen 5, 3rd Generation AMD Ryzen 7, 3rd Generation AMD Ryzen 9.-Max.SMP processor number:1.-Compatible memory types:DDR4-SDRAM.-Number of memory slots:4.-Type of memory slots:DIMM.-Maximum internal memory:128 GB.-Memory channels:Dual-channel.-Supported memory clock speeds:1866,2133,2400,2667,2800,2933,3000,3066,3200,3466,3600,3733,3866,4000,4133,4266,4400,4800 MHz.-ECC:Yes.-Non-ECC:Yes.-Ethernet:Yes.-Ethernet interface type:Gigabit Ethernet.-LAN Controller:Realtek 8111H.-Wifi:No.-USB 2.0, connectors:2.-USB 3.2 Gen 1 (3.1 Gen 1) connectors:1.-Number of SATA III connectors:6.-Audio connector on front panel:Yes.-ATX power connector (24 pins):Yes.-CPU fan connector:Yes.-Number of connectors to chassis fan:6.-12 V electrical connector:Yes.-Connector for RGB LED strips:Yes.-TPM connector:Yes.-Intrusion connector to chassis:Yes.-USB 2.0:4.-USB 3.2 Gen 1 (3.1 Gen 1):2.-Number of Type A USB 3.2 Gen 2 (3.1 Gen 2) ports:1.-Number of Type C USB 3.2 Gen 2 (3.1 Gen 2) ports:1.-PS/2:1 mouse port.-Ethernet LAN ports (RJ-45):1.-HDMI Ports:1.-DisplayPort:1.-Supported storage disk interfaces:Serial ATA III.-Types of storage units supported:HDD & SSD.-RAID levels:0,1,10.-PCI Express x16 slots (Gen 4.x):1.-Number of M.2 slots (M):2.-PCI Express x1 (Gen 3.x) slots:2.-PCI Express x16 Gen (3.x) slots:1.-Jumper Clear CMOS:Yes.-Support for parallel processing:2-Way CrossFireX.-Maximum resolution:4096 x 2160 Pixels.-Maximum graphics adapter memory:16000 MB.-Chipset family:AMD.-Chipset:AMD B550.-Form factor:ATX.-Audio output channels:7.1 channels.-Sound chip:Realtek ALC892.-Component for:PC.-Number of mounting holes:9.-Width:305 mm.-Depth:244 mm.-Cables included:SATA.-Controllers included:Yes. Tradeinn.com Delivery: in United Kingdom Report	£105.99 Buy in shop

	MSI AMD B550-A PRO AM4 DDR4 ATX Motherboard MSI AMD B550-A PRO AM4 DDR4 ATX Motherboard B550-A PRO Supports AMD Ryzen 5000 & 3000 Series desktop processors (not co... morempatible with AMD Ryzen 5 3400G & Ryzen 3 3200G) and AMD Ryzen 4000 G-Series desktop processors Supports DDR4 Memory, up to 4400(OC) MHz Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2 Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works Powerful Design : Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost Audio Boost: Reward your ears with studio grade sound quality Multi-GPU : With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface. M.2 SHIELD FROZR Worlds fastest SSDs can start to lower performance when getting hot. Part of the motherboards heatsink design, M.2 SHIELD FROZR is the next generation M.2 thermal solution to avoid this by offering the best thermal protection to make sure that SSD maintains maximum performance. PCB WITH 2OZ THICKENED COPPER An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking. Note: The content above is generic for the series. For Correct info about this particular model, please refer to Specifications section. Box.co.uk Delivery: to United Kingdom Report	£104.99 Buy in shop

	MSI B550-A PRO AMD Ryzen B550 ATX DDR4 Motherboard - Socket AM4 Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only less troubleshooting but a... morelso optimized professional workflows and longevity. Awd-it.co.uk Delivery: to United Kingdom Report	£109.95 Buy in shop

	MSI B550-A PRO ATX motherboard - AMD B550 Socket AM4 Clove.co.uk Delivery: to United Kingdom Report	£102.61 Buy in shop

7 more offer(s)

Video reviews

24 November 20214 470 view

5 December 20211 875 view

MSI Pro B550-VC Unboxing Review & Asus B450 F Comparisons

12 May560 view

MSI B550 A Pro series motherboard review and unboxing in punjabi (supports AMD 3rd /5th gen 5000)

25 December 2020716 view

The New B450 Tomahawk: MSI B550-A Pro & B550M Pro-VDH VRM Thermal Test

29 July 2020197 862 view

Unboxing of MSI B550-A PRO ProSeries Motherboard (AMD AM4, DDR4, PCIe 4.0, SATA 6Gb/s)

12 August 20221 776 view

MSI B550-A PRO UNBOXING

6 November 20223 056 view

MSI B550-A PRO ProSeries Motherboard Unboxing #shorts

15 September 202132 184 view

MSI B550-A PRO review, questions and answers

25 February 202111 865 view

MSI B550-A Pro ATX motherboard | Unboxing and overview

11 December 2020120 791 view

Best Budget Motherboard for Ryzen - MSI B550-A PRO - Review

28 May 202167 750 view

MSI B550-A PRO unboxing and overview

17 August 202045 724 view

MSI B550-A PRO ProSeries Motherboard Review // Newegg Now

15 September 202158 755 view

MSI B550-A Pro AM4 AMD ATX Motherboard unboxing and review Bangla

26 November 20204 143 view

MSI B550-A Pro Overview, LTT Tier 1 Motherboard for $140!

11 December 20209 692 view

Unboxing Motherboard MSI B550-A Pro and Ryzen 5 3600 (OEM)

14 February 20212 084 view


	MSI B550-A PRO vs MSI MAG B550 TOMAHAWK

	MSI B550-A PRO vs MSI MPG B550 GAMING PLUS

	MSI B550-A PRO vs Gigabyte B550 Gaming X V2

MSI B550-A PRO

Buy MSI B550-A PRO

MSI B550-A PRO ProSeries Motherboard AMD AM4 DDR4 PCIe 40 SATA 6Gb/s M2 USB 32 Gen 2 HDMI/DP ATX

Msi 911-7C56-08S

MSI AMD B550-A PRO AM4 DDR4 ATX Motherboard

MSI B550-A PRO AMD Ryzen B550 ATX DDR4 Motherboard - Socket AM4

MSI B550-A PRO ATX motherboard - AMD B550 Socket AM4