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🚀 Power your ambition with ASUS Prime B450M-A II — where performance meets future-ready innovation!
The ASUS Prime B450M-A II is a Micro ATX motherboard engineered for professionals and enthusiasts seeking robust Ryzen 5000 and earlier generation CPU support. It features ultra-fast USB 3.2 Gen 2 ports, support for up to 128GB DDR4 RAM with 4400 MHz overclocking, advanced cooling solutions, and customizable Aura Sync RGB lighting. Designed for easy installation and long-term reliability, it offers comprehensive protection and BIOS Flashback for hassle-free upgrades, making it an ideal foundation for high-performance, future-proof PC builds.











| ASIN | B08KH12V25 |
| Best Sellers Rank | #94 in Computer Motherboards |
| Brand | ASUS |
| CPU Model | Others |
| CPU Socket | Socket AM4 |
| Chipset Family | AMD B450 |
| Chipset Type | AMD B450 |
| Compatible Devices | Personal Computer |
| Compatible Processors | AMD 1st Gerenration Ryzen |
| Customer Reviews | 4.5 out of 5 stars 3,175 Reviews |
| Graphics Card Interface | PCI Express |
| Item Dimensions L x W x H | 9.5"L x 2"W x 9.6"H |
| Item Type Name | ASUS Prime B450M-A II AMD AM4 (Ryzen 5000, 3rd/2nd/1st Gen Ryzen Micro ATX Motherboard (128GB DDR4, 4400 O.C.), NVMe, HDMI 2.0b/DVI/D-Sub, USB 3.2 Gen 2, BIOS Flashback, and Aura Sync) |
| Item Weight | 2.1 pounds |
| Main Power Connector Type | 8 Pin |
| Manufacturer | ASUS |
| Memory Clock Speed | 2400 MHz |
| Memory Slots Available | 4 |
| Memory Storage Capacity | 128 GB |
| Mfr Part Number | Prime B450M-A II |
| Model Name | B450M-A II |
| Model Number | Prime B450M-A II |
| Number of Ethernet Ports | 1 |
| Number of Items | 1 |
| Number of Ports | 6 |
| Platform | Windows 10 |
| Processor Socket | Socket AM4 |
| RAM Memory Technology | DDR4 |
| Ram Memory Maximum Size | 128 GB |
| S/PDIF Connector Type | Optical |
| System Bus Standard Supported | SATA 3 |
| Total Number of HDMI Ports | 1 |
| Total PCIe Ports | 1 |
| Total SATA Ports | 2 |
| Total Usb Ports | 6 |
| UPC | 192876924990 |
| USB 2.0 | 12 |
| Warranty Description | 3 Years |
O**O
Great Budget Friendly Motherboard
ASUS Prime B450M-A II – Great Budget-Friendly Motherboard I’ve been using the ASUS Prime B450M-A II in my Ryzen build, and it’s honestly been a really solid experience. I paired it with a Ryzen 5 5600 and 16GB of DDR4-3200 RAM, and everything worked smoothly after a quick BIOS update (which was easy thanks to the BIOS FlashBack feature). **What I like:** * It supports Ryzen 1000 to 5000 series CPUs, which gives you a lot of flexibility whether you're upgrading or building new. * BIOS FlashBack is super helpful — I was able to update the BIOS without even having a CPU installed. * RAM compatibility has been great, and the system feels very stable overall. * It’s a clean, straightforward layout that’s easy to work with, especially for first-time builders. **A few things to keep in mind:** * It only has one M.2 slot, so if you plan on using multiple NVMe drives, just be aware of that. * No PCIe 4.0 support — but for most builds, especially at this price, PCIe 3.0 is more than enough. * There are only a couple of case fan headers, so you might want to use a splitter if you’re running more fans. **Overall:** This board is a great pick for a budget or mid-range AMD build. It’s reliable, easy to set up, and works well with a wide range of Ryzen processors. If you don’t need a bunch of extra features and just want something solid that works, the B450M-A II is a great choice.
B**U
A Great Replacement Board
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.
N**3
Good
Great board. Still using it today on my sons pc
W**Y
Great Basic Motherboard
Great Basic Motherboard. I bought this along with an AMD Ryzen 5 5500 6-Core, 12-Thread Unlocked Desktop Processor with Wraith Stealth Cooler and a jRadeon RX 580 8GB Graphics Card, 256Bit 2048SP GDDR5 AMD Video Card, just to run Windows 11. It did not disapoint. It also runs the latest version of Linux Mint on a seperate SSD as well. Paired it with 16 gb. of DDR4 RAM. Great value for the money. As far as Build quality, could be better, broke some pins trying to connect the front panel connector. Lots of usb ports. Memory Capacity is super, I am only using half. All in all, a great buy for a budget pc build.
S**N
Excelente mother por menos de 100 usd
Llevo con ella cerca de 4 años y no ha fallado ni molestado para nada. Le tengo un ryzen 5 5600x y una rtx 3060 de 12 gb de vram. Es calidad precio pura y dura
J**S
Reliable, versatile and easy to install
The ASUS Prime B450M-A II was an excellent choice for my PC. Installation was straightforward, and its compatibility with various generations of Ryzen processors gives me plenty of flexibility for future upgrades. It supports up to 128GB of DDR4 memory and allows for stable overclocking, which improves performance without any hassle. It also features modern ports like USB 3.2, NVMe, and HDMI 2.0b, making it very complete for its Micro ATX size. BIOS Flashback and Aura Sync are very useful extras that make setup and customization easier. All in all, a reliable and well-balanced motherboard.
E**Z
Placa base sólida y confiable, la utilizo en mi PC principal
Esta motherboard todavía funciona a la perfección y es la que tengo instalada actualmente en mi PC principal. Es una opción muy estable y recomendada para configuraciones basadas en procesadores Ryzen.
M**A
Potencia y Versatilidad en un Paquete Compacto: ASUS Prime B450M-A II
La placa base ASUS Prime B450M-A II es una opción excepcional para aquellos que buscan construir una PC potente y versátil. Con soporte para procesadores AMD AM4 de última generación, esta placa base ofrece un rendimiento confiable y estable para una amplia variedad de aplicaciones, desde juegos hasta tareas intensivas de productividad. Lo que realmente destaca de esta placa base es su capacidad para satisfacer las necesidades tanto de usuarios casuales como entusiastas. Con características como cuatro ranuras DIMM DDR4 que admiten hasta 128 GB de memoria RAM y múltiples puertos de conexión, incluyendo USB 3.2 Gen 2 y HDMI, la Prime B450M-A II proporciona la flexibilidad necesaria para configuraciones personalizadas y expansión futura. Además, ASUS ha integrado su tecnología de optimización de rendimiento AI Suite 3, que permite ajustes intuitivos y precisos para maximizar el potencial de tu sistema. Ya sea que estés buscando overclocking automático o ajustes avanzados de ventilador, esta placa base lo hace todo de manera sencilla. El diseño de la placa base también es notable, con componentes de alta calidad y un diseño de circuito optimizado para una disipación de calor eficiente. Esto garantiza una operación estable incluso durante sesiones de juego prolongadas o cargas de trabajo intensivas. En resumen, la ASUS Prime B450M-A II es una opción sobresaliente para aquellos que buscan una placa base confiable, potente y versátil para su próximo proyecto de construcción de PC. Con su combinación de rendimiento, características y calidad de construcción, esta placa base ofrece una excelente relación calidad-precio para una amplia gama de usuarios.
C**E
affordable
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.
U**W
does not work
die motherboard + cpu does not boot. 4 beeps followed by 5 beeps. I tried this with different rams and difetent cpu's . wast of money
E**S
Perfect Ultra budget motherboard
This board is perfect for budget builds and/or first time pc building since the board isn't too complex and simple to work on. Been using board a for several months after building my pc around this board and hasn't caused me problems apart from pcie being gen3 which lowers the full potential of your gpu in terms of fps in games. Ryzen 5000 series CPU is more than capable of running AAA games (Recommend R5 5600 for budget gaming cpu). The BIOS for this motherboard is easy to use and you can just look it up on YouTube on how to use ASUS bios. Would've been great if there was another M.2 nvme slot unless you don't mind using ssd drives. Though you have to buy a wifi/bluetooth card (which are like $35CAD to $50CAD). Other than that, this motherboard is great for starters or someone who needs a budget AM4 mobo.
P**A
Excelente por el precio
Quizá le falte una ranura más para m.2 pero fuera de eso no le puedes pedir nada más, para ser la gama económica de asus es de muchisima calidad, solo tengan cuidado si no tienen un gabinete de tamaño considerable ya que esta es algo más grande que las micro atx estándar pero vale por completo la pena, mi próxima mb será una de gama alta de asus sin duda.
ش**ي
انصحكم لكن منفذ واحد SSD
اسطوريه
Trustpilot
1 month ago
4 days ago