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ASUS Prime B450M-A/CSM AMD AM4 (3rd/2nd/1st Gen Ryzen Micro-ATX commercial motherboard (1Gb LAN, ECC Memory, D-Sub/HDMI/DVI-D, TPM header, COM port, ASUS Control Center Express)

4.5 4.5 out of 5 stars 5,664 ratings

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B450M-A

About this item

  • AMD AM4 Socket: The perfect pairing for 3rd/2nd/1st Gen AMD Ryzen CPUs
  • Fast Connectivity: 1Gb LAN, HDMI 2.0b, D-Sub, and DVI display outputs
  • ASUS CSM motherboard: ASUS Corporate Stable Model with up to 36-month supply, EOL notice, and ECN control
  • ASUS Control Center Express to make IT endpoint management simpler
  • 5X Protection III: all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O
  • Please ensure your BIOS is up to date if installing a compatible Ryzen 5000 series CPU. Visit ASUS site search by motherboard model name, click on “Support” tab, Drivers and Tools, then BIOS & Firmware to download the latest BIOS
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ASUS Prime B450M-A/CSM AMD AM4 (3rd/2nd/1st Gen Ryzen Micro-ATX commercial motherboard (1Gb LAN, ECC Memory, D-Sub/HDMI/DVI-D, TPM header, COM port, ASUS Control Center Express)
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Details
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Price$109.99-12% $79.99
Typical:$91.03
-10% $89.99
List:$99.99
-15% $109.99
List:$129.99
-17% $99.99
List:$119.99
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
For gaming
4.1
4.1
4.1
4.1
4.1
3.9
Tech Support
3.9
3.5
4.0
4.0
3.9
3.6
Value for money
4.2
4.2
4.1
4.0
Stability
4.1
4.3
3.8
3.7
Easy to install
4.4
3.4
4.1
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
platform
windows 10
windows 11
windows 10
windows 10
windows 10
windows 10
cpu socket
Socket AM4
LGA 1700
Socket AM4
Socket AM4
Socket AM4
Socket AM4
memory slots
4
4
4
4
4
4
memory capacity
1 GB
1 GB
1 GB
32 GB
128 GB
128 GB
compatible processors
AMD 2nd Gerenration Ryzen, AMD 1st Gerenration Ryzen
Intel Celeron, Intel Pentium Gold
AMD 3rd Generation Ryzen
AMD 3rd Generation Ryzen
AMD 3rd Generation Ryzen
card interface
pci e
pci e
pci e
pci e
pci e

From the manufacturer

About Us

ASUS is passionate about technology and driven by innovation. We dream, we dare and we strive to create an effortless and joyful digital life for everyone. We're always in search of incredible ideas and experiences, and we aspire to deliver the incredible in everything we do.

What's in the box

  • Motherboard
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    Product information

    Technical Details

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    Additional Information

    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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    ASUS Prime B450M-A/CSM AMD AM4 (3rd/2nd/1st Gen Ryzen Micro-ATX commercial motherboard (1Gb LAN, ECC Memory, D-Sub/HDMI/DVI-D, TPM header, COM port, ASUS Control Center Express)


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    Product guides and documents

    Product Description

    Powered by 2nd generation AMD Ryzen AM4 processors, the Asus Prime B450M A/CSM delivers performance and reliability in MicroATX form with Asus corporate Stable Model complimentary advance replacement and guaranteed long product lifecycle. Access next generation connectivity and speeds with NVMe M.2, USB 3.1, DDR4 support and Gigabit LAN.LED-illuminated design - Brighten up your build with the gorgeous illuminated audio trace path.

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    5,664 global ratings

    Customers say

    Customers like the performance, value, ease of installation, and boot time of the motherboard. For example, they mention that it works flawlessly, is solid, and is good value for money. Some appreciate the appearance and the user manual is easy to follow. That said, opinions are mixed on quality and the bios.

    AI-generated from the text of customer reviews

    143 customers mention115 positive28 negative

    Customers like the performance of the motherboard. They say it works flawlessly, right for the features, and works in a pinch. Some say that the board seems to function. Overall, most are satisfied with the performance and functionality of the product.

    "update: Oct 1, 2018The motherboard works fine, plenty of USB 3.0 ports (I use the pc to run an oculus rift, so I use a lot of the USB ports)...." Read more

    "Works well with my 5600x 6600xt only drawback is I had to flash the bios and only 1 m2" Read more

    "...to use the aura sync bc my case hasn’t arrived yet but everything else works perfectly only thing the ram is the second spot and the last spot..." Read more

    "...I have a Ryzen 5, and a RTX 4060 ti installed. So it works great so why 3 stars?..." Read more

    124 customers mention111 positive13 negative

    Customers like the value of the motherboard. They mention it's a solid board for the price, works with good CPUs, and is a great MB for budget builds. Customers also say it provides great performance for the money.

    "...This board provides good value and it does come (as another reviewer noted) with BIOS 1201...." Read more

    "This is the low cost gaming motherboard you are looking for for your AM4 processor.Do some planning though (unlike me)...." Read more

    "...that's my only criticism about this B450 motherboard, because the price is right...." Read more

    "Good for the price, Im happy with it" Read more

    79 customers mention61 positive18 negative

    Customers find the installation process of the motherboard to be easy. They mention that it works at the first try, it's easy to set up the BIOS, and it'll hook up without a hitch. They also appreciate the clear labeling and user manual, which is easy to follow. Overall, most are happy with their purchase and recommend it to others.

    "...here with a Ryzen 3 3200G cpu and 3000 MHZ DDR4 was a fun, hassle-free build...." Read more

    "Easy to install. Fast throughput and the on board video controller is actually usable for gaming. NOT GREAT but serviceable without a GPU." Read more

    "It works packaged was delivered safely and good packaging install was easy and it feels like a good borad" Read more

    "Easy to install and works great!" Read more

    41 customers mention34 positive7 negative

    Customers like the boot time of the motherboard. They mention that the m.2 NVME speeds are fast, and installing Windows 10 was a breeze. They also say that USB 3.0 is SUPER fast, making it easy to boot quickly. Overall, customers are satisfied with the performance of this product.

    "...For the price point, this was an exceptionally good value. The shipping was fast and I had no issues during installation that wasn't my own damned..." Read more

    "...Feels (obviously) really fast.I wished this board was available with with a heatsink over the VRM, wifi/bluetooth, and two m.2 slots...." Read more

    "Easy to install. Fast throughput and the on board video controller is actually usable for gaming. NOT GREAT but serviceable without a GPU." Read more

    "It works packaged was delivered safely and good packaging install was easy and it feels like a good borad" Read more

    25 customers mention21 positive4 negative

    Customers like the appearance of the motherboard. They mention that the layout is very well designed, and the triangles on it look great. Some appreciate the pleasant pattern and the sick design. Overall, customers are happy with the appearance and functionality of the product.

    "...As for the board itself:- very clean look, RGB backglow is subdued enough to leave on even in office environments-..." Read more

    "...Pros: Solid construction, nice layout, arrived with updated BIOS...." Read more

    "...ran so smoothly I recommend updating the bios and the led is a nice touch" Read more

    "Works flawlessly. No issues with install and looks great!" Read more

    186 customers mention116 positive70 negative

    Customers are mixed about the quality of the motherboard. Some mention that it has good features, a solid build quality, and is a decent Micro ATX motherboard. Others say that it was faulty and not functional when they received it.

    "it's good, atention for the RAM speed capacity, does not exceed 2400ghz" Read more

    "...Had to search online with a buddy to figure things out. Also only 1 PCIe slots meaning I would really only buy this if you have ethernet...." Read more

    "...screwdriver/ flathead as the screws are still secure, building everything was good although the IO shield had a large problem for me, the metal tabs..." Read more

    "This product arrived early and was in perfect condition." Read more

    30 customers mention16 positive14 negative

    Customers are mixed about the BIOS of the motherboard. Some mention that it comes updated, making it easy to overclock and do any overclocking. However, others say that it's terribly lacking and fails to take advantage of even all of the features.

    "...I also know this board will easily handle and provide a future upgrade path for AMD cpu(s) going forward over the next few years...." Read more

    "...to open a screen, and by an accidental setting I was completely unable to open up bios, having to manually reset bios through the motherboard itself..." Read more

    "...Pros: Solid construction, nice layout, arrived with updated BIOS...." Read more

    "...computers, but this is the first one that I have seen that did not have a BIOS setting for this. Hopefully my UPS will make it unnecessary...." Read more

    34 customers mention10 positive24 negative

    Customers are dissatisfied with the usb ports on the motherboard. They mention that the SATA ports are unusable, and the front USB ports stop working after startup. Some complain that the water pump and internal USB ports are missing. Additionally, some customers report issues with the display port and microphone port.

    "...SATA ports when an nvme is used, doesn't have Bluetooth and ports are extremely tight...." Read more

    "...If I had to complain about something, it would be the lack of water pump ports and internal usb ports for lighting...." Read more

    "update: Oct 1, 2018The motherboard works fine, plenty of USB 3.0 ports (I use the pc to run an oculus rift, so I use a lot of the USB ports)...." Read more

    "...At this point it stopped being able to support dual channel ram...." Read more

    Sleek look
    5 Stars
    Sleek look
    Love this motherboard haven’t gotten to use the aura sync bc my case hasn’t arrived yet but everything else works perfectly only thing the ram is the second spot and the last spot instead of the first and third but that’s not a problem just somthing I’ve never seen before
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    Top reviews from the United States

    Reviewed in the United States on January 9, 2024
    Style: B450M-A IIVerified Purchase
    Reviewed in the United States on November 4, 2019
    Style: B450M-AVerified Purchase
    133 people found this helpful
    Report
    Reviewed in the United States on January 23, 2024
    Style: B450M-A IIVerified Purchase
    6 people found this helpful
    Report
    Reviewed in the United States on December 27, 2023
    Style: B450M-A IIVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on March 15, 2024
    Style: B450M-A IIVerified Purchase
    Customer image
    5.0 out of 5 stars Sleek look
    Reviewed in the United States on March 15, 2024
    Love this motherboard haven’t gotten to use the aura sync bc my case hasn’t arrived yet but everything else works perfectly only thing the ram is the second spot and the last spot instead of the first and third but that’s not a problem just somthing I’ve never seen before
    Images in this review
    Customer image
    Customer image
    Reviewed in the United States on February 11, 2024
    Style: B450M-A IIVerified Purchase
    Reviewed in the United States on February 18, 2024
    Style: B450M-A IIVerified Purchase
    Customer image
    QP
    5.0 out of 5 stars Good for the price
    Reviewed in the United States on February 18, 2024
    Works well with my 5600x 6600xt only drawback is I had to flash the bios and only 1 m2
    Images in this review
    Customer image
    Customer image
    One person found this helpful
    Report
    Reviewed in the United States on February 8, 2024
    Style: B450M-A IIVerified Purchase

    Top reviews from other countries

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    Nombie Almazan
    5.0 out of 5 stars Great motherboard
    Reviewed in Canada on February 20, 2024
    Style: B450M-A IIVerified Purchase
    Ricardo da Motta
    5.0 out of 5 stars Placa mãe
    Reviewed in Brazil on January 7, 2024
    Style: B450M-A IIVerified Purchase
    Cliente de Amazon
    5.0 out of 5 stars Muy buena pero...
    Reviewed in Mexico on July 28, 2022
    Style: B450M-A IIVerified Purchase
    2 people found this helpful
    Report
    Yadu Krishnan
    5.0 out of 5 stars A good board for the price
    Reviewed in India on February 26, 2024
    Style: B450M-A IIVerified Purchase
    Customer image
    Yadu Krishnan
    5.0 out of 5 stars A good board for the price
    Reviewed in India on February 26, 2024
    Good board. Works well, uses AM4 socket.
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    One person found this helpful
    Report
    kpopfan
    5.0 out of 5 stars Great
    Reviewed in the United Kingdom on January 8, 2020
    Style: B450M-AVerified Purchase