ASUS Prime B550M-A WiFi II AMD Micro ATX Motherboard with PCIe 4.0, WiFi 6, ECC Memory, HDMI 2.1, RGB Header
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Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, Feb 24
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Style: Prime B550M-A WiFi II (Pack of 1)
Size: Micro ATX
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
CPU Model: Others
Processor: others
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: 2.55 pounds
Product Dimensions: 10.8 x 10.5 x 2.8 inches
Item Dimensions LxWxH: 10.8 x 10.5 x 2.8 inches
Color: BLACK
Manufacturer: ASUS
Date First Available: July 6, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Feb 24
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: ROG Strix B550-F Gaming WiFi II (Pack of 1)
Size: ATX
The Asus ROG Strix B550-F Gaming WiFi II motherboard arrived very well packaged, and installation was straightforward I only needed to buy a few extra standoffs for my case, which wasn’t a problem. This board exceeded my expectations with its beautiful design and solid, durable build. It feels robust and high-quality, and I’m confident it will last many years. Great value for money, especially for the performance it offers definitely a smart choice for anyone building a 3rd Gen Ryzen setup. Good Size, Excelente Performace, no Noises, Extreme stability and able to overclocking.
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Reviewed in the United States on January 12, 2026 by Pedro Guimaraes
Style: Prime B550M-A WiFi II (Pack of 1)
Size: Micro ATX
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.
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Reviewed in the United States on December 13, 2025 by William
Style: ROG Strix B550-F Gaming WiFi II (Pack of 1)
Size: ATX
The ASUS ROG Strix B550-F Gaming WiFi II has been awesome in my build. Installation was simple thanks to the clean layout and easy-to-navigate BIOS. The board feels solid, runs super stable with my Ryzen setup, and the PCIe 4.0 support plus dual M.2 slots make everything load fast. WiFi 6 and the 2.5G Ethernet are also really smooth for gaming and streaming. Overall, it’s a high-quality, feature-packed motherboard that delivers exactly what you want in a mid-range gaming build. Highly recommend!
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Reviewed in the United States on December 8, 2025 by mateo mateo
Style: ROG Strix B550-F Gaming WiFi II (Pack of 1)
Size: ATX
Works perfectly as my first ever pc I built myself. It has very nice LED lights that let you know if the system is working with different colors meaning a part is failing. The bios is one of the best I have seen and it was extremely easy to set up everything the way that I wanted, there is even a lot of automatic options for easy setup. The motherboard itself looks clean, temps are low with good heatsinks, the SSD heatsinks are very nice once you learn how to use them. I will also say that the manual is very informative at guiding you on anything that you will need. Some downsides is that the wifi driver does not come preinstalled so you need to have a existing wifi reciever already, or install the drivers onto a USB. The "armory crate" just seems like total bloatware I would personally boot the bios, set everything up, and turn off armory crate installs before installing windows. Other than those small issues the motherboard is great.
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Reviewed in the United States on November 10, 2025 by Nicholas Miller
Style: ROG Strix B550-F Gaming WiFi II (Pack of 1)
Size: ATX
I've used it about 3 weeks now for reference. The main components in the build are a 5800x3d CPU, MSI RX 6950 XT GAMING X TRIO GPU, 2x16gb Corsair Vengeance 3600 c18 memory, and just because I also mention a small software/bios default config that does increase CPU temps my CPU cooler is the deepcool lt720 (that I'm using as a top exhaust since it is pretty overkill for a 5800x3d) and the case is the dynamic evo with 6 ml120 case fans for intake and one for exhaust on the back so the case airflow isn't the issue. Positives: -Loved the bios design and how its organized. best ive used so far. small but is a nice touch. -The bios does make overclocking any (Yes even for the 5800x3d even if ryzen master wont let you in windows) also can be negative if you don't know your way around in bios since default it was overclocking my CPU in multiple different bios settings some you cant see unless you select advanced bios instead of the "EZ" one. -Overall Aesthetics -Has most of the quality of life upgrades (the GPU Pcie slot guard, built in wifi 6, bios flashback, m.2 heat shields, the ram "safe slot" (I honestly didn't see how it was any safer or easier than the other 2 standard locking thats on other boards other than maybe it being easier for someone whos never seated ram before), gen 2 argb, the preinstalled I/O shield, pretty good looking audio ports if you do plan on using a 5.1 or 7.1 surround setup (don't use any of them so idk if they're good quality or not), 2.5g lan port, plenty of usb 2 and 3 ports, some like the software asus provides if you want it like armory crate and the AI thing was a negative IMO but i also prefer other software options instead but if your the kind of person that likes to set and forget the things like fan control then seems like it would be good if not for the crazy amount of bloatware that comes with it and no I didn't see any option of keeping only the essentials of armory crate without them EXCEPT for asus Aura to control the motherboard rgb on the IO shield. Negatives: -The Default BIOS settings was the main negative i have with this board but you can workaround it so that's why I gave it 4 stars instead of 5. The settings I'm talking about are like I mentioned earlier where it was overclocking my CPU before i changed anything in the bios. Which can be a positive if your kind of new to OCing and just want a little extra performance but I personally didn't want to overclock my CPU since it can shorten the lifespan of your CPU and possibly other components that are affected by OCing the CPU but also because it wouldn't really increase game performance in my setup enough for me to make that trade off. The main setting ive found causing it was the Asus performance enhancement setting in bios but it also does still seem to be providing a little too much voltage to my cpu even with it off but not by enough to worry about so no it wont make your 5800x3d explode like their newer high end board did with the 7000 series x3d CPUs lol. setting a -30 offset in bios did help some as well though with temps and power usage. with default settings the temps would get up to 90-92C in the OCCT 2hr CPU benchmark. After adjusting the bios it doesn't go over 85C. - Again another bios default setting...... I would highly recommend turning off the armory crate automatic download in bios if you don't it'll not only install armory crate which already is full of bloatware it'll also automatically download other software automatically which you may or may not want like the AI thing, the "Free 60 day" subscription to aida 64 extreme which is worth absolutely nothing since it doesnt give you a 60 day subscription it just downloads the free version of aida 64 extreme which yes is FREE TO ANYONE the difference is with the paid version it comes with more tools and removes the "Trial version" logo on anything you make with it which the "Free 60 day subscription" Asus claims to gratuitously bestow unto you doesn't include. IMO i would say that's fake advertising and they should remove that from the product page. anyway back to the bloatware... I made the mistake of downloading armory crate and let me tell you it is the absolute hardest software I've ever seen to completely remove once you install it. I have used the uninstall executables that come hidden in the folders, ive tried using deep cleaners/uninstallers that even removes small traces left after in the windows registry and ive still not removed all the bloatware that uses system resources for basically nothing i use. I've seen people say armory crate bloatware but seriously wtf it installs random drivers that run in the background just in the off chance you have ANY of the other hardware asus or im guessing third party hardware they work with?? im talking multiple background processes running and waiting to detect if you ever install a specific brand of memory , SSD, HD, Keyboard, mouse, headset, controllers, router, speaker, and some others I haven't bothered google searching for. i do admit they're not using hardly any resources on their own but combined it can be a decent amount so depending on your hardware you might be wasting 5%+ of your cpu and memory on something that doesnt benefit you in the slightest. the only option i can think of to completely rid my life of it is to format my SSD and do a fresh windows install which i would do if i had made a backup that doesn't include it. If anyone does have a different solution PLEASE post it on a review because you'd be a hero. anyway rant about the bios/armory crate over. Would i recommend the motherboard? Yes absolutely. Would i recommend asus's bs "Free" subscription and software? No fk you asus and your automatic bs software downloads. and if your living the hell that is uninstalling it like me, HMU if you know of a Alcoholics anonymous like support group for it.
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Reviewed in the United States on May 24, 2023 by Tommy
Style: Prime B550M-A WiFi II (Pack of 1)
Size: Micro ATX
Can't say enough about this product. I was very specific on my needs like bluetooth and WiFi and this had it all. Yes, it's not the latest tech as it is still PCIe 4.0 vs 5.0 that's all I needed: light gaming and a very strong workstation. Tried and true no crashing or hiccups. The Bios was the latest update so when I installed the CPU, Ryzen 7 5700g, it booted right up no updates needed. This fit the bill. The only catch is that once installed some drivers need updating like Bluetooth. I thought windows was strong enough to update but it wasn't however Ausu provided a cd that corrected the proper drivers and once done everything worked perfectly (luckily, I has an external cd player to use). Definitely recommended.
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Reviewed in the United States on December 3, 2025 by mbPA