Search  for anything...
ASUS

ASUS Prime B550M-A WiFi II AMD Micro ATX Motherboard with PCIe 4.0, WiFi 6, ECC Memory, HDMI 2.1, RGB Header

    • Based on 3,124 reviews
Condition: New
Checking for product changes
$104.99 Why this price?
Save $25.00 was $129.99

Buy Now, Pay Later

As low as $17.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Nov 3
Order within 17 hours and 37 minutes
Available payment plans shown during checkout

Pattern: mATX


Style: PRIME B550M-A WIFI II


Features

  • 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 at 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.

Description

Powered by 3rd Gen AMD® Ryzen™ processors, the ASUS Prime B550M-A WiFi II delivers next-generation speeds with PCIe 4.0, WiFi 6 and 1Gb LAN. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the ASUS Prime B550M-A WiFi 6 provides mainstream PC users and DIY PC builders with a perfect all-around foundation via intuitive software and firmware features.

Brand: ASUS


CPU 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


Model Name: PRIME B550M-A WIFI II


Memory Storage Capacity: 128 GB


RAM: ‎DDR4


Memory Speed: ‎2133 MHz


Wireless Type: ‎802.11a/b/g/n/ac, 802.11ax


Number of USB 2.0 Ports: ‎11


Brand: ‎ASUS


Series: ‎PRIME B550M-A WIFI II


Item model number: ‎PRIME B550M-A WIFI II


Item Weight: ‎2.48 pounds


Product Dimensions: ‎10.5 x 2.8 x 10.8 inches


Item Dimensions LxWxH: ‎10.5 x 2.8 x 10.8 inches


Color: ‎BLACK


Manufacturer: ‎ASUS


Country of Origin: ‎China


Date First Available: ‎July 6, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great performance and great design!
Pattern: ATX Style: PRIME B550-PLUS
Review Image by Aaron Aaron
The build with this motherboard was a favorite of mine. Plenty of room all the fans and graphic's cards you’d want or need. Allowing for 4 sticks of ram. The brushed aluminum detail looks great with the black board. Very easy to install and a user friendly BIO’s.
Reviewed in the United States on June 10, 2024 by Aaron Aaron
    • Great MB
Pattern: ATX Style: PRIME B550-PLUS
For the price on this and what ya get, it is well worth it. Don't worry about having wi-fi on the board, all the wi-fi built into the boards I have tested (which is many) are all crappy anyways. Best off to go with USB dongle or a wired wi-fi/bluetooth (seeing they only cost 20$ max). Enjoy your new MB and have fun sticking things in it (no pun intended). ... show more
Reviewed in the United States on May 13, 2024 by Rafael E. Morris
    • Good value
Pattern: ATX Style: PRIME B550-PLUS
I paired this mobo with a 5600x, and since it came with an updated bios it rain the cpu without issue, though there is a more recent bios. I did, however, have issues getting it to work. It would turn on, but nothing would display on screen and the green boot light stayed on. Long story short, replacing the cmos battery seems to have done the trick. This issue has not returned since the new battery. Some of the plastic looks kind of cheap, but it's not a big deal and only noticeable when installing stuff. Otherwise it looks quite nice in the case. For anyone who doesn't like the "audio led", it can be turned off or set to static in the bios. Software wise, Armoury Crate sucks. I recommend going into bios and turning off the automatic install. AI Suite 3 is decent, though everything can be adjusted in the bios/uefi. If you need something to control rgbs, openrgb is a good option. Amd has more recent chipset drivers than what's available on Asus's site, so I recommend getting them from there. All in all, I'm pleased with this motherboard and it was a good price. Everything works and it has plenty of options, plus it's windows 11 ready, which is nice. ... show more
Reviewed in the United States on July 2, 2022 by Aaron Talbot
    • Finicky with memory needs newest BIOS no diagnostic LEDs small heatsinks but worth it...kind of.
Pattern: ATX Style: PRIME B650-PLUS
Review Image by Electrosoft Electrosoft
Review Image by Electrosoft Electrosoft
I picked up an Amazon Warehouse open box for some nice savings and as always they are hit or miss. Luckily in regards to shape this is a hit but I can see why it was returned and Amazon marks this as a frequently returned item. This is a 7600x, 32GB (2x16GB) of manually tuned memory and a Samsung 980 Pro 1TB SSD driving a 7900xtx. Unit was used but in great shape with all pack ins. No bent pins and ready to go...kinda. Let's talk about the issues with this board. Memory compatibility and BIOS issues: BIOS on board was 1811 which is 4-5 months old. Using the DDR5 memory in the pic, the unit would not post at all and without LED diagnostic lights appears to be DOA (which it is not) I tried a few other sticks from M-die generic sticks to G.Skill and no post I finally found a circa 2022 M-die DDR5 stick and it posted. Once I was able to post, I updated the BIOS to the newest 2413 BIOS and retried all my sticks and they all worked except the one in the pic which after testing in other boards was DOA. So one of the main problems with this board is memory compatibility which the newest BIOS update seems to address BUT you of course need compatible memory to get it to post so you can update it since it doesn't have BIOS flashback. If the memory isn't compatible, it won't post and can even appear to be DOA without any diagnostic lights...brilliant. No diagnostic LED: For a $200 board, the lack of any type of debug diagnostic LEDs is simply unacceptable. You have no idea what's going on or what is failing. I've seen diagnostic lights on B650 boards costing almost half as much as the Asus board. Weak VRMs: As has been reported, this board has weak VRMs *IF* you're trying to power a top end AM5 CPU. I tested it with a 7600X and a 7950X3D running CB23 multi. The 7600X didn't even break 60c and stayed right around 50-55 for the entire run. The 7950X3D *did* get quite warm hitting into the 80s and 90s. A 7950X will definitely topple it long run. So is it worth it? With all that, there is something about the design and look of this board and its heatsinks I really like especially the chipset heatsink. It kind of just works aesthetically. If you can snag this open box for a good price, have patience and most importantly have access to the right memory then yes. I was lucky enough to have many sets of DDR5 laying around to get it to post and update the BIOS to 2413. Once updated, it works fine. I've been testing and running it for several days now and it has been rock solid. For the retail price of almost $200? Look elsewhere. I like it enough that I picked up both this and an Asus Strix X670E motherboard at the same time and I'll be returning the Strix unopened as this gets the job done at a fraction of the price. ... show more
Reviewed in the United States on April 11, 2024 by Electrosoft Electrosoft
    • One of the best Motherboards out there.
Pattern: ATX Style: PRIME B550-PLUS
This was my go to motherboard for creating PCs. I actually have several of these motherboards as I have multiple gaming rigs. The whole setup is great and the AMD processors help give it a little extra boost. All of the slots make things nice too. It can use an nvme drive and has plenty of PCIe slots for any upgrades that you need to make to the machine. ... show more
Reviewed in the United States on May 11, 2024 by Randy G
    • Nice motherboard with DDR 5 support.
Pattern: ATX Style: PRIME B650-PLUS
The motherboard is very nice. The bios has to be upgraded to support Windows 11. You should consider flashing the bios prior to installing the OS. If you do not update the bios, you will receive an unsupported error from the Windows 11 setup. This board is not WiFi enabled. The power and reset pins are at the lower edge of the board and are a little difficult to connect. This is the same with most boards. Overall the motherboard overclocking options are detailed. You are able to configure cpu settings, memory settings and etc. This is pretty standard for new Asus boards. Overall a good board for the price. The B650 may not have PCIe 5.0 support. The B650E does. The X670 will have PCIe 5.0 support and 3 M.2 drive support. However, the B650 is a lot cheaper. If you are looking for PCIe 5.0, you can use a B650 board, just make sure it has it. Also, the 650 boards do not support as many M.2 drives and USB as the 670. 650 boards are AM5 compatible. So, make sure you buy an AM5 cpu. AM4 boards are a lot cheaper and the best bang for the buck. In addition AM4 cpus are about half the price. ... show more
Reviewed in the United States on May 18, 2024 by loc nguyen

Can't find a product?

Find it on Amazon first, then paste the link below.