ASUS Prime B550M-A WiFi II AMD Micro ATX Motherboard with PCIe 4.0, WiFi 6, ECC Memory, HDMI 2.1, RGB Header
Condition: New
Checking for product changes
Buy Now, Pay Later
As low as
$20.00
/ mo
Learn more
- – 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
30-day returns
Learn more
30-day refund/replacement
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:
In Stock.
Arrives
Friday, May 30
Style: mATX
Size: 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
RAM Memory Maximum Size: 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: 2.55 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:
Friday, May 30
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Style: ATX
Size: PRIME B550-PLUS AC-HES
I used the ASUS Prime B550-PLUS AC-HES AMD AM4 motherboard for my home arcade build, and it’s been a fantastic choice. The setup was smooth and the board offers great compatibility with my components. The B550 chipset provides solid performance, and the board handles everything from light gaming to heavy multitasking with ease. I was particularly impressed with the built-in Wi-Fi and Bluetooth, which made setting up my arcade PC wireless and hassle-free. The board’s design is clean and compact, and the onboard audio is crisp, which is perfect for my arcade cabinet’s sound system. Overall, this motherboard offers incredible value for the price. It’s stable, reliable, and more than capable of supporting the needs of a home arcade system. Highly recommend for anyone looking to build or upgrade their setup!
...
show more
Reviewed in the United States on May 14, 2025 by Kevin
Style: ATX
Size: PRIME B550-PLUS AC-HES
I was building a medium budget pc and this motherboard was a great fit for a reasonable price. Great quality, spacing between components was not an issue. I have had for about 5 months and haven't had any issues with the motherboard. It handles gaming well, temperature holds well with my setup, even with some modern games. I like the lighting options, while it is not essential, but it gives it a nice look. It has handled all updates, gaming, downloads, streaming with no problem or issues, great performance. This is a great value if you are a building a mid budget pc.
...
show more
Reviewed in the United States on April 24, 2025 by C Cantu
Style: mATX
Size: PRIME B550M-A WIFI II
I bought a few motherboards from other companies, including ASRock, MSI, and Gigabyte. The MSI and Gigabyte boards were nothing but trouble, and the ASRock board failed within a few days. So, I opted to spend a few extra bucks, not be a cheapskate, and get the Asus board. I should have known better—I’ve never had problems with Asus boards. Absolutely no problems whatsoever—great performance, and it includes their AI Suite, which lets you dynamically or manually adjust fan speeds, something the other boards didn’t offer. One thing it doesn’t have is a USB-C header, but it does have a USB-A 3.2 Gen 2 port on the back. I just plug in a USB-A to USB-C cable, and that works fine for USB-C devices at full speed (10 Gbps), the same as USB-C, compared to standard Gen 1 at 5 Gbps. Another issue is that the graphics card sits very low, so if you're using a micro ATX case, you might not be able to fit case fans at the bottom—like in the Okino's case I have. Otherwise, it’s a great board.
...
show more
Reviewed in the United States on March 13, 2025 by DonT
Style: mATX
Size: PRIME B550M-A WIFI II
Great motherboard, great price for a budget build. I am not sure if it is just an issue with mine or issue with the Board itself, but the built in Wi-Fi does not work, BIOS says its enabled but going into device manager it has a driver error even after installing all the board drivers. Something to keep in mind in case it isn't just a localized issue to my board. Other than that, everything else works great like its supposed to.
...
show more
Reviewed in the United States on May 5, 2025 by David Appleby
Style: mATX
Size: Prime B450M-A II
I updated my son's Cyberpower PC to Windows 11. Everything installed successfully, including all the updates. Then after a restart the display wouldn't come on. That Mobo was an MSI B450 Tomahawk and the LED's said VGA problem. Given the circumstance I couldn't believe it suddenly died. I tried numerous times resetting the CMOS, reseating the graphics card, reseating memory, even checked the power supply, etc. I ordered this ASUS Prime B450M-A II as an economic replacement. It arrived in 2 days and was packaged well. The price dropped 2 days after I ordered. The box has labels Windows 11 ready and Ryzen 5000 Series ready. The board comes with backplate, 2 SATA cables, a M2 screw for mounting, a driver disc and the manual. This ASUS mobo is laid out differently than the MSI. I like it better. The graphics card slot is moved over one space with the M2 slot out in the open. With this Mobo you can use a M2 with a heatsink attached. The MSI M2 slot was directly under a dual-slot graphics card. I like the BIOS flashback feature (located on the back) with this board. The BIOS is laid out well, very intuitive and easy to use. I have built several computers over the years with ASUS my go-to brand. This Mobo is a great full featured B450 motherboard for AM4 series CPU's. The BIOS is upgraded to accept Ryzen 5000 series CPU's. Simply put you're getting a great AM4 motherboard for a great price.
...
show more
Reviewed in the United States on February 3, 2025 by Buckerou
Style: mATX
Size: PRIME B550M-A AC
La placa base ASUS Prime B550M-A AC AMD AM4 es una excelente opción para quienes buscan una solución sólida y con buena conectividad. Ofrece un rendimiento estable y eficiente, ideal para configuraciones de gama media. La integración de Wi-Fi y Bluetooth es una gran ventaja, proporcionando flexibilidad en la conexión. La calidad de construcción es sólida, y la BIOS es fácil de usar. En general, es una placa base confiable que cumple con las expectativas para usuarios que buscan un equilibrio entre rendimiento y características modernas.
...
show more
Reviewed in the United States on April 12, 2025 by Arcadio Hernandez
Style: mATX
Size: PRIME B550M-A WIFI II
I have been building computers for over 20 years, kind of like Asrock motherboards the most. Been wanting a B550 chipset so I can get REAL PCI 4.0 throughput on M.2. Installed this over the weekend and I will say I am impressed. Not a single hang or freeze. Tried 3 diff 4x4 M.2 hard drives. ONLY the Kioxia KBG8... gave me the 4.0 boost, my highest bench was 3900, up from 2800 w 3x4. I am running a R7 3700x, plugged it in and working great. The wifi driver would not load automatically thru windows. Go to Asus website and Wi-Fi drivers, click on more and download all 3 different chipsets. I think it's the 8852BE driver. Try them all, it will work eventually.
...
show more
Reviewed in the United States on March 24, 2025 by Matthew D. Mercer