MSI MPG B550 GAMING PLUS AM4 ATX Motherboard

BH #MSB550GPLUS • MFR #B550GPLUS
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MSI MPG B550 GAMING PLUS AM4 ATX Motherboard
Key Features
  • ATX Form Factor
  • AMD B550 Chipset
  • Socket AM4
  • 4 x Dual-Channel DDR4-4400 MHz (OC)
Set the foundation of your next custom gaming-focused PC with the MPG B550 GAMING PLUS AM4 ATX Motherboard from MSI. It's ideal for the gaming enthusiast who wishes to have complete control over their build without breaking the bank.
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$139.99
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MSI B550 GAMING PLUS Overview

Set the foundation of your next custom gaming-focused PC with the MPG B550 GAMING PLUS AM4 ATX Motherboard from MSI. It's ideal for the gaming enthusiast who wishes to have complete control over their build without breaking the bank.

Sporting the AMD AM4 socket and B550 chipset, you can easily use a wide range of Ryzen 5000, 4000, and 3000 Series processors. Four DDR4 RAM slots allow you to install up to 128GB of RAM with overclocking speeds up to 4400 MHz for greater multitasking, gaming, and render performance. Two M.2 SSD interfaces and six SATA ports allow you to amass multiple storage devices for your games, media, and more. Utilize graphics and utility cards with a series of expansion ports including one PCIe 4.0 x16, one PCIe 3.0 x16 (in x4 mode), and two PCIe 3.0 x1 slots. Between internal headers and back panel ports, you get access to multiple USB 2.0, 3.2 Gen 1, and 3.2 Gen 2 ports, allowing you to support a breadth of peripherals from keyboards to audio interfaces. Connect to your network with the Gigabit Ethernet port, giving you enhanced upload and download speeds suitable for accessing your cloud storage, gathering assets, and playing your favorite streaming media.

Performance and Protection
MSI designed the MPG B550 with a mindfulness, starting with a six-layered 2oz thickened copper printed circuit board which increases conductivity and improves heat dissipation. A 10+2+1 Duet Rail CPU power system utilizes phasing technology, enabling core boost capabilities that empower the processor for overclocking, while reducing electrical loads. Load-line calibration and overvoltage protection stabilize CPU voltage and protect critical components from short-circuiting under heavy operational loads. ESD protection provides additional grounding layers around the mounting holes, preventing potential static discharge from damaging the motherboard. Additionally, the PCIe slot features steel-armor covering, preventing the weight of heavy graphics cards from affecting the motherboard by heavily reinforcing soldered connections.
Performance Boosting Technology
Lightning Gen 4 works with the two M.2 PCIe NVMe SSD slots to provide you with enhanced data transfer speeds up to 64 Gb/s, improving loading times and general operating system performance. Audio Boost also provides studio-grade sound for immersive gaming experiences. Game Boost is a quick one-second enhancement that allows your system to enable overclocking with just the press of a button. HDMI and DisplayPort outputs allow up to 4K resolution depending on the CPU installed.
Thermal Solutions
MSI provides multiple thermal solutions to keep your motherboard and components cool as you game. Pump fan support allows you to attach various water-cooling systems while also reducing radiator noise. Extended heat sinks and cooler pads provide better heat transference through the board, reducing temperature throughout the system. The M.2 Shield Frozr is a specialized heatsink designed for M.2 PCIe NVMe solid-state drives, preventing damage caused by overheating. A 7W/mk thermal pad provides better heat transfer, adding another layer of elemental protection.
MSI Dragon Center
Adjust operation parameters and monitor performance with the MSI Dragon Center software. This program allows you to fine-tune various aspects of your build, streamlining fan control and making custom changes simple and easy. With the LAN Manager, you can prioritize your games over other applications, adjust bandwidth properties, and run multiple tests to ensure optimized gaming performance. Dragon Center also enables you to change lighting settings for compatible RGB-enabled components such as fans and peripherals like mice and keyboards.
Enhanced Sound
Make sure you enjoy the purest sound quality in both stereo and surround sound with a dedicated high-definition audio processor backed by high-fidelity capacitors for deep and realistic sound. Like a dedicated sound card, audio components and circuits have been laid on a reserved motherboard section and electrically isolated. Using separated layers in the PCB ensures equally pristine sound quality for both left and right audio channels.
UPC: 824142218600

MSI B550 GAMING PLUS Specs

Key Specs
Chipset
AMD B550
CPU Socket
AM4
Memory Slots
4x 288-Pin
Memory Type Support
DDR4, 4400 MT/s Maximum Supported Speed
M.2 Slots
22110 / 2280
Expansion Slots
1x PCIe 4.0 x16
1x PCIe 3.0 x16 (x4 mode)
2x PCIe 3.0 x1
Wi-Fi
No
Form Factor
ATX
CPU
Chipset
AMD B550
CPU Socket
AM4
Back Panel I/O
USB
1x USB-C (USB 3.1/3.2 Gen 2)
1x USB-A (USB 3.1/3.2 Gen 2)
2x USB-A (USB 3.0 / 3.1/3.2 Gen 1)
4x USB-A (USB 2.0)
Thunderbolt
No
Display
1x HDMI
1x DisplayPort
Audio
5x 1/8" / 3.5 mm
1x S/PDIF
Ethernet / Controller
1x Gigabit
PS/2
1x Combo
Buttons
BIOS Flashback
Memory
Memory Slots
4x 288-Pin
Memory Type Support
DDR4, 4400 MT/s Maximum Supported Speed
Maximum Capacity
128 GB
Channel Architecture
Dual Channel
ECC Support
Non-ECC, ECC (Non-ECC Mode) Unbuffered
Storage Expansion
SATA
6x SATA III
M.2 Slots
1x M.2 (M Key) 22110/2280/2260/2242 (PCIe 4.0 x4)
1x M.2 (M Key) 2280/2260/2242 (PCIe 3.0 x4)
RAID Support
RAID 0, 1, 10 (SATA)
RAID 0, 1 (M.2)
Internal I/O
Expansion Slots
1x PCIe 4.0 x16
1x PCIe 3.0 x16 (x4 mode)
2x PCIe 3.0 x1
USB
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 1 USB-C Port)
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port)
2x USB 2.0 Header (Supports 4 USB-A Port)
Air Cooling
1x 4-Pin CPU
6x 4-Pin System
Liquid Cooling
1x 4-Pin Pump
Power Connectors
1x 24-Pin Mainboard
1x 8-Pin ATX
Security
Chassis Intrusion, TPM Module
LED Header
3x RGB
Diagnostics
Clear CMOS
BIOS
ROM
256 Mb
Front Panel I/O
Front Panel I/O
USB 3.0 / 3.1/3.2 Gen 1
Audio
Audio Codec
Realtek ALC892/ALC897 (7.1-Channel)
DAC
No
Wireless
Wi-Fi
No
Bluetooth
No
Software
OS Compatibility
Windows 10
Physical
Form Factor
ATX
Dimensions
9.6 x 12" / 24.4 x 30.5 cm
Packaging Info
Package Weight
3.995 lb
Box Dimensions (LxWxH)
13.5 x 10.6 x 3.5"

MSI B550 GAMING PLUS Reviews

Motherboard

By Cale
Rated 5 out of 5
Date: 2020-11-05

Took a little while to get here but this board was 70$ cheaper than micro center. Have had 0 issues so far, will see how good it really is when I upgrade to a zen3 CPU but for now it’s perfect

Great board

By Hani
Rated 5 out of 5
Date: 2020-08-03

A little lacking on the RGB header options but great board overall. The manual is a great resource that made my first build a cake walk, its very detailed and thorough, tons of capacity and expandability with SATA, M.2 and USB cards, and great I/O options both in front and back. The built in RGB is also sick. One downside is the price but I bought this when it first came out and its already trending downwards.

See any errors on this page?

Is this Micro ATX?

Is this Micro ATX?
Asked by: Ellanki
No, this motherboard is an ATX form factor.
Answered by: Daniel
Date published: 2026-03-02

Does this motherboard have wifi in it?

Does this motherboard have wifi in it?
Asked by: William
Unfortunately, this board does not contain Wifi.
Answered by: Nachmen
Date published: 2021-01-07

does this work with a AMD Ryzen 7 3700X 3.6 GHz ...

does this work with a AMD Ryzen 7 3700X 3.6 GHz 8-Core Processor?
Asked by: brody
Yes the MSI MPG B550 GAMING PLUS BH #MSB550GPLUS supports the Ryzen 7 3700X out of the box.
Answered by: Miguel M
Date published: 2026-02-08
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