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ASUS PRIME B450-PLUS AM4 AMD B450 SATA 6Gb/s ATX AMD Motherboard

Ships from United States. Most customers receive within 4-8 days.

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  • Powered by 2nd generation AMD Ryzen AM4 processors to maximize connectivity and speed with NVMe M.2, USB 3.1 Gen2, DDR4 (3200 MHz) and Gigabit LAN
  • 5X Protection III hardware-level safeguards provide component longevity and reliability
  • Aura Sync RGB header provides a nearly endless spectrum of colors with the ability to synchronize effects across an ever-expanding ecosystem of enabled products
  • Unique SafeSlot Core fortified PCIe slot prevents damage caused by heavyweight GPUs
  • FanXpert 4 Core delivers comprehensive controls for fans and AIO pump, plus GPU-temperature sensing for cooler and optimized gaming

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

ASUS PRIME B450-PLUS AMD Motherboard

Supporting the 2nd generation AMD Ryzen AM4 processors, the ASUS Prime B450-PLUS is engineered to provide true gaming performance. Take advantage of next-generation connectivity and speeds with NVMe M.2, USB 3.1 Gen2, DDR4 compatibility, and native RAID support. 5X Protection III ensures excellent component longevity and reliability while Aura Sync RGB adds flair to your system. ASUS Fan Xpert and ASUS UEFI BIOS make tuning clicks away. Just tune to get the best cooling and the highest performance.

the diagram of ASUS PRIME B450-PLUS AMD Motherboard
Tune it your way
cooling control panel

Flexible cooling controls

With Prime B450-PLUS motherboard you have comprehensive control over fans, water pumps, and even all-in-one (AIO) coolers?all via Fan Expert 4 Core. Whether you're cooling with air or water, Auto-Tuning mode intelligently configures all parameters with a single click.

All-round energy efficiency

With the Energy Processing Unit (EPU) you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.

an illustration of temperature sources of the motherboard

Cooler by design

Prime B450 Series features the most comprehensive cooling controls ever, configurable via ASUS Fan Xpert software or the UEFI BIOS.

Multiple temperature sources

Each header can be set to monitor and react to up to three thermal sensors. Via Fan Xpert, you can also assign a sensor to monitor the temperature of supported ASUS graphics cards to ensure optimal cooling during GPU- or CPU-intensive workloads.

AIO Pump

Dedicated PWM/DC header for self-contained water-cooling setup, is built right in.

4-pin PWM/DC Fan

Each onboard header supports auto-detection of PWM or DC fans.

Smart Protection

A dedicated integrated circuit protects each fan header from over-temperature and over-current.

the momory slots and a 3466Mhz logo

Make your memory faster

Featuring an array of trace layout tweaks that improve memory stability, PRIME B450 Series provides a potent foundation for your build. With comprehensive support for the full gamut of Ryzen memory configurations—from entry-level to performance-oriented—PRIME B450 Series is a versatile all-rounder that can work or play.

BIOS interface of the motherboard

Media-acclaimed UEFI BIOS

The UEFI BIOS is an early waypoint on any PC-building journey, and Prime B450 Series has one of the best in the business.

Q-Fan Control

Can configure the fan's operating speed manually, or use the easy pre-configured fan profiles to select Standard, Silent, Turbo or Full Speed modes, plus automatic switch to full speed if the temperature hits 75°C.

Search Function

When you're ready for a deeper dive, Advanced mode enables full control over every aspect of the motherboard—with a built-in Search function to find the setting you need in the blink of an eye.

Ultrafast connectivity
two USB 3.1 Type-A ports in the rear panel

USB 3.1 Gen 2 Type-A

With backward-compatible USB 3.1 Gen 2 Type-A, you'll experience ultimate connection flexibility and blazing data-transfer speeds of up to 10Gbps—twice as fast as standard USB 3.1 Gen 1.

USB 3.1 Gen 1 port for front panel

USB 3.1 Gen 1 front-panel connector

USB 3.1 Gen 1 is right where you need it, with four super-speed headers for the front panel. Experience data-transfer speeds up to 10X faster than USB 2.0 with instant plug-and-play connectivity, and avoid back-breaking contortions in the hunt for hard-to-reach rear ports.

the M.2 slot

Speed up with onboard M.2

With x4 PCI Express 3.0/2.0 bandwidth, M.2 supports up to 32Gbps data-transfer speeds. It's the perfect choice for an operating system or application drive, providing fast access to data.

Native M.2/NVMe PCIe RAID Support

Not satisfied with single-storage device read/write speeds? Then join the fast lane and build a RAID 0 array using two PCIe storage drives to enjoy data transfers at lightning speeds.

logo of AMD StoreMI

AMD StoreMI

AMD StoreMI technology is a software utility that accelerates any drive for better system responsiveness with reduced startup and software load times. It combines SSD performance with the affordability and capacity of an HDD by automatically moving frequently accessed data to dedicated SSD storage.

Reliable stability and compatibility
certifications for compatibility

Built to Last

ASUS is the world's leading motherboard brand. Our motherboards are extensively tested for compatibility with more than 1,000 components and devices, and each new model undergoes a minimum of 8,000 hours of strict validation—offering the peace of mind of knowing that your ASUS motherboard is fit for all environments and applications. Choosing ASUS is an assurance of trouble-free DIY experiences.

Upgrade to unrivalled audio
the audio unit of the motherboard

Audio shielding

Separates analog/digital signal domains, significantly reducing multi-lateral interference.

Separate layer for left and right tracks

Ensures minimal crosstalk between audio paths.

Premium Japanese-made audio capacitors

Premium parts provide an immersive sound signature, with exceptional fidelity.

Visual beauty, virtual worlds
the motherboard showing its 4 pin RGB header



Aura Sync

A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura Sync offers full lighting connected via the motherboard's RGB header, with a variety of functional presets for external LED strips.2 And it can all be synced with an ever-growing portfolio of Aura-capable ASUS hardware.

* The Aura RGB-strip header supports 5050 RGB LED strips with a max power rating of 3A (12V). For maximum brightness, strip length should not exceed 3m. LED strips and Aura Sync-compatible devices are sold separately.

LED lighting on PCIe slot

Brighten Up Your Build

LED-illuminated control for PCIe slot and trace paths

Built-in LED lighting options illuminate your build in a variety of eye-catching styles.

a VR headset

Beyond VR ready

Prime B450 series isn't just VR ready—it goes way beyond. The ASUS Beyond VR Ready marque means that Prime B450 series has been tested with loads of class-leading components to ensure that your productivity, gaming and entertainment needs are tuned for maximum performance. ASUS Beyond VR Ready opens up a new way to configure and build your dream system with total confidence.

Note:

* Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.


Learn more about the ASUS PRIME B450-PLUS

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great 1/30/2020 4:31:03 PM

Pros: Bought a MSI mobo
USB ports did not Work right
This board works great

Overall Review: recommended

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
first build 1/21/2020 9:40:11 PM

Pros: it handles getting bashed and putting all the cords in was very easy and not as bad as the old 2008 computer i took apart repaired and put back together for practice

Overall Review: recommend

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works flawlessly 1/14/2020 4:02:21 PM

Pros: Good price & performance from what I can see.

I did have difficulty initially getting it operational, but was able to get technical support on a chat using my lap top. I started out with a video adapter but it wouldn't display anything and gave a a set of tones. I removed it to use the video on the motherboard. He pointed out that my CPU doesn't handle onboard video adapters so I put my adapter back in and everything worked, I must of had it seated well enough the first time.

Cons: The documentation is not as clear as it could be. It has "System panel connector (20-5 pin F_PANEL) This connector supports several chasis-mounted functions."

Indeed it does, it as the power switch, reset switch, speaker and various other connectors that connect to it - no diagram on how they are connected. They are on the motherboard for those who have great vision but it would be good to have it clearly mapped out in the book.

When contacting tech support about my video problem above I saw a document that had it mapped out clearly on their website - they just need to put it in the book.

Overall Review: Great product that does what it's advertised for a reasonable price!

Did you find this review helpful?
Anonymous
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Does Not Support Ryzen 3200G/3400G Out of the Box 12/13/2019 12:39:03 PM

Cons: Does not ship with BIOS version that supports Ryzen 3x00G CPUs out of the box.

Overall Review: This board does not support Ryzen 3x00G CPUs out of the box when shipped from Newegg. Works perfectly fine with 2x00G out of the box however.

0 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

It's very unfortunate you've encountered BIOS issues with your motherboard. Please keep in mind, any motherboard released before a new CPU will need a BIOS update for them to be compatible. Please contact AMD to receive a temporary bootkit to make the necessary BIOS update to use your configuration. If you need any further assistance, feel free to contact me at cl-adrian@asus.com, and I will help you to the best of my abilities. I am here to assist our customers with our products and dedicated to bringing a resolution to all issues that they may come across. Your case for reference is N191258691.

Thank you for choosing ASUS!

Best Regards,
Adrian
ASUS Customer Loyalty – US Support
Ownership: 1 day to 1 week
Verified Owner
1/ 5
Great Paper weight 11/1/2019 12:41:04 PM

Pros: Nice paperweight

Cons: Needs Bios update to work with gen 3000 amd processors

Overall Review: Needs a bios update, You need to have a gen 1000 AMD Ryzen processor to update the bios. This makes the deal I got this board and a gen 3 ryzen processor nothing more than a paper weight until I can get some thermal paste to switch processors around.

2 out of 5 people found this review helpful. Did you?
Manufacturer Response:
Dear Jeremiah L.,

I'm sorry to hear about your BIOS issues. For any sales bundle related complaints, please contact your reseller. This motherboard does require a BIOS update to support Ryzen 3000 CPUs. AMD currently has a program where you can apply to have them send you a loaner CPU to perform the BIOS update at no cost. I have included information about that program below. If you are having any other issues with your board that would reflect a 1-Star review, please email me at cl-lane@asus.com and include a link to this review for reference.

Thank you for choosing ASUS!

Best regards,
Lane
ASUS Customer Loyalty – US Support
Anonymous
Ownership: 1 month to 1 year
Verified Owner
1/ 5
How can I give it ZERO stars? 9/25/2019 10:51:33 AM

Cons: fragile board - needs mounting holes close to 24 pin connector

Overall Review: I am so impressed with it that from here on out I will buy Gigabyte, MSI, or ASRock. And never anything branded ASUS.

0 out of 3 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
1/ 5
Will not support 3rd gen processor without bios flash 9/6/2019 9:41:03 PM

Pros: none, won't boot.

Cons: Will not support 3rd gen processor without bios flash. It appears to be DOA. If you don't have an earlier generation supported processor that you can insert so that you can boot into the bios, you are out of luck (like me). Deceptive advertising.

Overall Review: Would never buy again, would never recommend to anyone. Buy another brand

0 out of 6 people found this review helpful. Did you?
Manufacturer Response:
Dear C F.,

Thank you for your feedback. I certainly understand how frustrating it is to have issues booting your machine for the first time. This motherboard was designed for 1st and 2nd Generation Ryzen CPUs as stated on the Newegg and ASUS official product page. If we have made any marketing errors please reach out to me so we can fix them, I was unable to locate them.

As you noted, if you flash the BIOS to version 1201 or newer, it will be compatible with your 3rd Generation Ryzen CPU. AMD has a program where users in your situation can receive a loaner CPU to do the BIOS flash, free of charge. I've included the link to AMD's Support page below. If you have any general or technical questions, please email me at cl-lane@asus.com and include a link to this review for reference.

Thank you for choosing ASUS!

Best regards,
Lane
ASUS Customer Loyalty – US Support

https://www.amd.com/en/support/kb/faq/pa-100

https://www.asus.com/us/Motherboards/PRIME-B450-PLUS/specifications/
Anonymous
Ownership: 1 week to 1 month
Verified Owner
3/ 5
Linux GPU passthrough does not work! 8/28/2019 5:00:05 AM

Pros: Solid, reliable motherboard. Out of the box this thing works. Tested with windows and ubuntu linux 16, 18 and 19. I bought this motherboard for GPU pass through to a windows 10 guest vm. All I could get working was an intel ethernet card with iommu passthrough in linux kvm. The board ships with bios version 318. Ran into stability issues with default bios and upgraded to last bios released in 2018. Big improvement after this update.

My setup was as follows:

AMD ryzen 2700
32gb crucial ram
AMD RX 580 saphire for pass through
Zotac nvidia GT 710 for host operating system
120gb SSD for testing purposes
600 watt psu

Cons: Does not work with amd iommu GPU pass through with any recent version of ubuntu linux or qemu-kvm version 3.1.

You cant designate primary gpu in the bios!

Overall Review: Would recommend to anyone looking to build a windows box. The board works fine otherwise

2 out of 3 people found this review helpful. Did you?
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