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ASUS PRIME B550-PLUS

Motherboard ATX Socket AM4 AMD B550 - 4x DDR4 - SATA 6Gb/s + M.2 - USB 3.1 - PCI-Express 4.0 16x

119€95
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Overview

ASUS PRIME B550-PLUS: AM4 Motherboard with exclusive features

Ready for the 3rd generation AMD Ryzen processors (named Core Matisse), the ASUS PRIME B550-PLUS motherboard is ideal for designing a powerful and balanced gaming PC. The PCI-Express 4.0 support takes you to new heights. With support for DDR4 RAM up to 128GB, PCI-Express 3.0 graphics cards, M.2 PCIe 4.0 4x drives, the ASUS PRIME B550-PLUS motherboard takes advantage of the latest AMD B550 chipset.

ASUS Prime Series motherboards are designed and engineered for the mainstream, featuring the best components and exclusive performance features. Overclocking and high efficiency allow users to get the most out of their system.

PRIME B550-PLUS pluses:

  • AMD AM4 socket for AMD Ryzen 3rd generation processor
  • 4 DDR4 4800 MHz Dual-Channel (O.C.) memory slots
  • Full cooling: VRM heatsink, fanless PCH heatsink, fan and Fan Xpert 4 utility
  • Advanced Connectivity: M.2 PCIe 4.0, USB 3.1 Type-A and Type-C
  • Aura Sync RGB (3 connectors, one addressable)

AMD Ryzen 3000

The AMD Ryzen 3000 processors are among the first PC processors to be etched in 7nm and are compatible with the PCIe 4.0 interface. The third generation Ryzen, codenamed Matisse, impresses with its many cores and threads and very high base frequencies! AMD's Ryzen 3000 offers a (re)discovery of high-end performance for gaming, content creation and intensive multitasking. They allow you to do EVERYTHING even faster and more fluidly.

Information provided by our tech department This motherboard is compatible with Ryzen 3000 processors and above. Ryzen 3 3200G and Ryzen 5 3400G are not supported. A BIOS update may be required for newer processors. In case of doubt you can refer to the processor compatibility list on the manufacturer's website.
Specifications
Select your criteria

General information

Product name

ASUS PRIME B550-PLUS

Brand

ASUS

Model

90MB14U0-M0EAY0

Processor

Processor support

AMD AM4

Number of CPUs supported

1

Chipset

Chipset

AMD B550

Memory

Memory format

4 X DIMM 288-pin (DDR4)

Memory Frequency(ies)

DDR4 4800 MHz
DDR4 4466 MHz
DDR4 4600 MHz
DDR4 4400 MHz
DDR4 4266 MHz
DDR4 4133 MHz
DDR4 4000 MHz
DDR4 3866 MHz
DDR4 2133 MHz
DDR4 2400 MHz
DDR4 2666 MHz
DDR4 2800 MHz
DDR4 3000 MHz
DDR4 3200 MHz
DDR4 3333 MHz
DDR4 3466 MHz
DDR4 3733 MHz
DDR4 3600 MHz

Memory type

DDR4

Memory technology

Dual Channel

Maximum RAM capacity per slot

32 GB

Maximum RAM capacity

128 GB

Graphic

Integrated graphics controller

No

Compatible graphics core integrated in the CPU

Yes

Expansion slots

Graphic connector(s)

1 X PCI Express 4.0 x16
1 X PCI Express 3.0 16x (x4)

Number and Type of slots

3 X PCI Express 3.0 x1

Multi-GPU type

None

Audio

Audio Chipset

Realtek ALC887

Number of audio channels

8

Network

Number of ports/Ethernet controler

Realtek RTL8111H

Network standard(s)

10/100/1000 Mbps

Wi-Fi

No

Storage

RAID supported

Yes

Hard drives connectors

6 X Serial ATA 6Gb/s (SATA Revision 3)
1 X M.2 - PCI-E 4.0 x4 + SATA 6 Gb/s
1 X M.2 - PCI-E 3.0 x4 + SATA 6 Gb/s

Number of M.2 slot(s)

2

Supported RAID Modes

0
1
10

Connectivity

Motherboard connector location

Standard connectors (on the motherboard)

Rear panel connectors

5 X 3.5mm Jack Female Stereo
1 X Digital audio S/PDIF Optical
1 X RJ45 Female
2 X USB 2.0
4 X USB 3.0
1 X USB 3.1
1 X USB 3.1 Type C
1 X HDMI Female
1 X DisplayPort Female

Additional connectors

2 X Internal USB 3.0
4 X Internal USB 2.0
1 X Serial (RS-232)
1 X ATX 24 Pin
1 X +12V (Power supply P8)
1 X Front panel audio
1 X Internal S/PDIF
1 X TPM
1 X Addressable LED RGB connector(s)
2 X LED RGB connector(s)

Physical characteristics

Motherboard format

ATX

Length

305 mm

Width

244 mm

Equipment

Advanced overclocking features

Yes

Use

Multimedia
Office

LED

Yes

Warranties

Commercial warranty

Legal warranty

Safety Information

Responsible person

ASUS Computer GmbH

Postal address

Harkort STR. 21-23, 40880 RATINGEN, GERMANY

Electronic Address

ProducSafety@asus.com

Product referenced on 17 Jun 2020

Customer reviews
  • 57%
    4 reviews
  • 43%
    3 reviews
  • 0%
  • 0%
  • 0%
  • by JeanFrancoisF
    Posted on 2 Dec 2025
    Bought on 24 Nov 2025 from LDLC
    Number of reviews: 12 Average rating: 10

    good motherboard

    I would recommend this motherboard, it's fast, quiet, high performance and of good build quality. My computer boots up quickly, delivery is fast by courier and well packaged,

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  • by tiburce33
    Posted on 28 Oct 2025
    Bought on 24 Sep 2025 from LDLC
    Number of reviews: 11 Average rating: 9

    very good

    This product is part of a set of motherboard asus prime amd b 550, processor amd ryzen5 5600, ventirad be quiet pure rock slim 2 , memory corsair vengeance LPX 32 Go, ssd samsung 990 pro M2 Nvme 2 To upgrade my old configuration and move to windows11.
    The shipment by ldlc was fast and problem-free.
    From my old configuration, I kept the asus geforce GTX 1650 graphics card, the case and the storage hard drives.
    I had a little trouble at first getting my new configuration to boot up, but the problem was actually with the previous power supply. I appreciated ldlc's responsiveness and advice in finding the source of the problem (which was resolved by replacing the power supply unit).
    I'm now completely satisfied with this new configuration, particularly for its silence and speed, for the use I make of it (office work and occasional 4K video editing).

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  • by Yannick C
    Posted on 14 Oct 2025
    Bought on 14 Sep 2025 from LDLC
    Number of reviews: 8 Average rating: 10

    Perfect

    Bought to install a replacement PC, everything works perfectly without any noise and the equipment heats up very little.
    Perfect

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  • by WKP-BBQ
    Posted on 27 Dec 2024
    Bought on 29 Nov 2024 from LDLC
    Number of reviews: 9 Average rating: 8

    Maj bios Necessary

    Great product; I already had an Asus motherboard, and I had to change it to upgrade;
    The connectors are almost all in the same place: practical.
    This card has a Spdif audio output, which is not the case on some of the less advanced ranges.
    I had to update the bios because the processor used is newer than the motherboard, which isn't very practical and adds a stressful step to the first boot-up of the PC. So 4/5. Very fast delivery.

    The LEDs on the side are nice, but you can hardly see them once the graphics card has been installed. Asus has made great improvements to the management of these LEDs, which is much easier than with previous models.

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  • by DidierD
    Posted on 14 Dec 2024
    Bought on 11 Nov 2024 from LDLC
    Number of reviews: 3 Average rating: 10

    Good product

    25-year brand loyalist. Quick to assemble. One small drawback: the internal connectors are very close together and a little difficult to access.
    I added a graphics card, a memory card/USB3 reader and 2 external USB2s in addition to those on the front of the case.

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