ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX Motherboard (PCIe 4.0, WiFi 6, ECC Memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, Addressable Gen 2 RGB Header and Aura…

(11 customer reviews)
SKU: 12B3004B

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Description

  • AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs
  • Ultrafast Connectivity: 1x PCIe 4.0 x16 SafeSlot, WiFi 6 (802.11ax), 1Gb LAN, dual M.2 slots (NVMe SSD)—one with PCIe 4.0 x4 connectivity, USB 3.2 Gen 2 Type-A , HDMI 2.1 (4K@60HZ), D-Sub & DVI
  • Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2 utility
  • 5X Protection III: all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O
  • Boosted Memory Performance: ASUS OptiMem proprietary trace layout allows memory kits to operate at higher frequencies with lower voltages to maximize system performance.

Specification

Overview

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Processor

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Display

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

RAM

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Storage

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Video Card

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Connectivity

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Features

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Battery

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

General

Processor Socket

Socket AM4

Compatible Devices

Personal Computer

RAM Memory Technology

DDR4

Compatible Processors

AMD 3rd Generation Ryzen

Chipset Type

AMD B550

Memory Clock Speed

2133 MHz

Platform

Windows 10

CPU Model

Ryzen 3

Memory Storage Capacity

128 GB

Ram Memory Maximum Size

128 GB

Main Power Connector Type

24-Pin

Graphics Card Interface

PCI Express

Memory Slots Available

4

Number of Ports

13

S/PDIF Connector Type

Optical

System Bus Standard Supported

SATA 3

Total SATA Ports

4

USB 2.0

11

Total Usb Ports

6

Number of Ethernet Ports

1

Total Number of HDMI Ports

2

Total PCIe Ports

16

Brand

Asus

Model Name

PRIME B550M-A WIFI II

Model Number

PRIME B550M-A WIFI II

Manufacturer

Asus

UPC

195553309752

Item Type Name

Computer motherbaord

Country of Origin

China

Item height

2.8 inches

Item Weight

2.55 Pounds

Manufacturer Contact Information

48720 Kato Rd

,

Fremont

,

CA 94538

Warranty Description

3 Years

Item Dimensions L x W x H

26.7L x 7.1W x 27.4H Centimetres

Customer Reviews

4.4
11 reviews
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11 reviews for ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX Motherboard (PCIe 4.0, WiFi 6, ECC Memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, Addressable Gen 2 RGB Header and Aura…

Clear filters
  1. Vijay Ramkissoon

    This is a decent motherboard for the am4 platform, I used this to set up a home theatre PC with gaming capabilities and it is working well so far with no issues. There are good options for extra storage, built-in wifi AND Bluetooth, and since it’s mATX it is easier to work within a smaller case. Be warned though, the wifi drivers do not work out of the box and that can halt your Windows setup, so I had to use a spare USB wifi dongle and download the new drivers from the Asus support site. Also, I dislike the flimsy and poorly designed I/O shield and sharp edges of the VRM heat sink.

  2. Jay

    If anyone is wondering about compatibility with R5 5500, I received my board 12/15/25 and it worked without issues. Perhaps I just got lucky. Board was manufactured in 2024. Very happy with it! Easy to install and lots of cool bios features.

  3. Ken

    Worked out of the box with my new Ryzen 5500, RTX 5050, and SSD with Windows 11 installed. Even had an option in the BIOS for Resizable Bar. Manufacturing date on the box said April 2025.
    Everything is working well! Couldn’t boot at first but my RAM just wasn’t fully seated. Also was having problems connecting to bluetooth headphones until I realized that the included WiFi adapter is also the bluetooth adapter and must be installed.
    Also be aware that if you are installing the basic stock AMD cooler, you will need to hold the backplate in place as it most likely will fall off the back after unscrewing the pre-installed stands for higher-end coolers. And as far as I can tell, there are no debug leds on this motherboard. But I maybe I just missed them.

  4. RB

    I recently tested out the ASUS Prime B550-PLUS Motherboard, and here’s a breakdown of its features to save you scrolling through a book of details and my experience using it:

    The Good Stuff
    • Dropped this board into my PC build and it booted like a champ with my Ryzen processor

    • PCIe 4.0 slots meant my graphics card ran smooth as butter

    • HDMI 2.1 connection handled 4K displays without breaking a sweat

    • RGB header let me add some fancy light show to my build

    • 1Gb LAN connection stayed stable during intense gaming sessions

    Opportunities
    • Installation needs some tech know-how – not a beginner’s board

    • Might be overkill if you’re not running a performance-focused system

    • RGB sync can be finicky with different component brands

    • Price point is higher than basic motherboards

    • BIOS updates require a bit of patience and tech skills

    Bottom Line: High-end AMD board for serious PC builders who want performance and style.

  5. Benoit Tremblay Technologie

    Build a nice computer for less then a 1000$ ca that still kicks aside my old computer that I build 12 years ago at the price of 2500$

    Take note, the price mention above for the new computer is with AMAZON specials at the moment of purchase. (November 2024)

    Now, like I was saying for much less then a 1000$ using those components
    Motherboard ASUS Prime B550 plus.

    Power supply Thermaltake Smart BX1 750W Bronze SLI/Crossfire Ready.

    RAM Corsair Vengeance LPX 32GB (2 X 16) at 3200mhz

    CORSAIR 3000D Airflow Mid-Tower PC Case – 2X SP120 Elite Fans – Four-Slot GPU Support.

    Processor AMD Ryzen 5 5500 6-Core, 12-Thread Unlocked FAN included.

    May have to chip around 50$ for a Wi-Fi/Bluetooth card if you don’t have it already.

    Kingston 480 gb SSD.

    Graphic card GeForce GTX 1650 4gb

    Licence for Win 11 PRO, shop and find at different price, you only need a Digital license to make this machine work fine. Mine costed 125$ ca.

    This kit support without any problem Win 11 24H2 latest release almost a plug and play. (Installed it on the 22 Nov 2024 and never seen that before not one issue.)

    I’m not a hardcore gamer but I love my dead island, day light, etc… level of games and yes that system will support those and maybe more demanding games (Do your DD to find out, like I said I’m a mild gamer) no problem even projected on a 10 feet X 5 feet wall.

    So, my goal was to try at best not to invest my saving and have a nice machine that is functional for what I need, and not to flex (Look at me I got a machine that goes around Jupiter and back but it costed me 5000$) LOL

    You could also overclock that system with a little bit of knowledge, and the bios readiness unlock the RAM which is set to nominal 2133 or so to full values (Mine are 3200 MHz) at a click away, Rams have a build in profile to facilitate its full profile.

    And do not forget that you have room for expending for a bigger graphic card, RAM and a bit more room for the processor then what I used.

    So this was my quest on AMAZON to get something more recent then the Asus P8Z77- deluxe (2012) which is still fine but does not support win 11 due to TPM and for the hardcore gamers Steam do not support any longer the win 7, 8, 8.1 and it is just a question of time before win 10 will no longer be supported by Steam.

    Yes, I forgot, I can install win 11 on the Asus P8Z77 deluxe (2012) with the removal of the TPM notification but at the long run it keeps bugging more often then I care for, so, for all my software that I have for editing video, creating music etc….. Win 7 on this Asus P8Z77 deluxe works fine, and I know that win 10 will support my old system, so I will experiment more on the subject.

    In conclusion I got something that kick for less then 1000$ ca and I build it my self from A to Z without any problem (Plug and play I would say) and will last some years without having to cash out money left and right.

    Keep searching there are nice specials on AMAZON.
    hope this help a bit

    Den.

  6. LEE TONG SENG

    I recently purchased the ASUS Prime B450M-A II AMD AM4 motherboard, and I’m impressed with its performance given its affordable price. The AMD AM4 socket ensures compatibility with a wide range of processors, offering flexibility for future upgrades.

    The motherboard’s build quality is sturdy, and the layout is well-designed, making installation a breeze. The comprehensive set of features includes PCIe 3.0 support, M.2 slot for high-speed storage, and USB 3.2 Gen 2 ports for faster data transfer.

    The BIOS interface is user-friendly, allowing easy customization and optimization of system settings. While it may lack some advanced features found in higher-end models, it provides a reliable foundation for budget gaming or productivity builds.

    Overall, the ASUS Prime B450M-A II offers excellent value for its price, making it a solid choice for users seeking a reliable and cost-effective motherboard for their AMD-based system.

  7. Cade

    I put together a backup PC using this board with an AMD 4750G and it works flawlessly. I especially love the BIOS of Asus boards, particularly with adjusting the fan speeds. There’s a utility in the BIOS that detects the optimal fan curves for your cooling setup and it works for both 3 pin DC and 4 pin PWM fans and that’s just one of the many features of the BIOS. The back panel has a decent selection of ports, including 1x USB-C.

    There are 2x M.2 slots however, depending on what you’ve got plugged in only one of them might be active. In my case, with a SATA SSD plugged in to one of the SATA ports, the upper M.2 slot (near CPU) didn’t recognize my NVME drive, only the bottom M.2 slot did.(near panel connectors).

    Other than that quirk, it’s a decent board and it has pretty RGB effects too if you’re into that.

  8. LEE TONG SENG

    NOTICE: When installing the audio and network drivers, you may need to use the CD included since that is how the drivers were able to be successfully installed for those components. Downloading from the website did not work, and the CD installer will auto detect and mark what drivers are installed.

    Great motherboard particularly if you get it sub $90. It has BT 5+ and comes with WIFI6 chip and an antenna which works tremendous compared to my external Wifi 6 adapter. No USB-C and only one HDMI port along with older video ports, but the trade offs are that it comes with Bluetooth and Wifi 6. It does have PCIE4 x16 and (1)PCIE4 x4 m.2 along with a PCIE3 x4 m.2.

    Highly recommend it if you want a B550 chipset micro-atx board with built in bluetooth and wifi 6 modules.

  9. Benoit Tremblay Technologie

    Most of Asus Prime board are good, Didn’t receiveived it at this time, but buy a lot of those board and they have Heat Spreader on both SoC and VRM and the one on chipset is well design with no fan and more aluminium and you’re case fans keep cooling it if you have good fans 😉

    P.S. in the photo, the only one i got flaw is on case fan connector after BIOS upgrade, but was an intel 13th gen version MicroATX Wifi Plus first version i think, reroute them to PSU via fans HUB in this case but no more fan curve control but still good with good low noise fan, 1 problem encounter vs a lot of builds. Most important for me when choosing a board is Heat spreader and what i’m looking to build and cpu price and 4 ram slot and number on fan connector. You can get B550 Motherboard with Ryzen 5 5500 with 16GB of Dual chan ram DDR4 for really good price, and put really good GPU on it for gaming with PSU with enough power to drive it 😉

  10. Denis Labbe

    Value for money and trust Asus products.

  11. William

    Cumplio todas las expectativas aparte dar un buen estilo a mi pc

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