ASUS Prime B550M-A/CSM AMD AM4 (3rd Gen Ryzen™) microATX Commercial Motherboard (PCIe 4.0, ECC Memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, TPM, ASUS Control Center Express)
Condition: New
$189.00
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This item is eligible for return within 30 days of receipt
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.
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Availability:
Only 4 left in stock, order soon!
Arrives
Nov 8 – Nov 10
At a glance
- Condition
- New
- Style
- Prime B550M-A/CSM (Pack of 1)
- Size
- Micro ATX
- Model
- PRIME B550M-A/CSM
- Storage
- 128 GB
- Dimensions
- 10.35"L x 2.03"W x 10.63"H
- Weight
- 1.3 lb
- Warranty
- 3 years
- Works with
- Personal Computer
Features 5
- AMD AM4 Socket and PCIe 4. 0: The perfect pairing for 3rd Gen AMD Ryzen CPUs. Operating System-Windows 10 64-bit
- Fast Connectivity: 1Gb LAN, USB 3. 2 Gen 2 Type-C & Type-A ports, a front panel USB 3. 2 Gen 1 connector, plus HDMI 2. 1, D-Sub, and DVI display outputs
- First PCIe 4. 0 CSM motherboard: ASUS Corporate Stable Model with up to 36-month supply, EOL notice, and ECN control
- ASUS Control Center Express(ACCE) 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
Description
Powered by AMD 3rd Gen Ryzen processors, the ASUS Prime B550M-A/CSM commercial motherboard provides enhanced enterprise level features, including comprehensive system protection, 24/7 stability & reliability, an improved management suite with ASUS Control Center Express, ASUS Corporate Stable Model complimentary advance replacement, and a long product life cycle for reliable sourcing and support. Free 3-months Adobe Creative Cloud Subscription: Receive complimentary access with the purchase of this product (offer valid from 9/15/2021 to 9/15/2022) visit adobe-creative-cloud/ to claim.
Specs 31
| Brand | ASUS |
|---|---|
| CPU Socket | Socket AM4 |
| RAM Memory Technology | DDR4 |
| Compatible Processors | AMD 3rd Generation Ryzen |
| Chipset Type | AMD AM4 |
| Memory Clock Speed | 4400 MHz |
| Platform | Windows 10 |
| Model Name | PRIME B550M-A/CSM |
| CPU Model | Others |
| Processor Socket | Socket AM4 |
| Memory Storage Capacity | 128 GB |
| Ram Memory Maximum Size | 128 GB |
| Main Power Connector Type | 24-Pin |
| Graphics Card Interface | PCI Express 4.0 |
| Memory Slots Available | 4 |
| Number of Ports | 14 |
| S/PDIF Connector Type | Optical |
| System Bus Standard Supported | SATA 3 |
| Total SATA Ports | 4 |
| USB 2.0 | 4 |
| Total Usb Ports | 4 |
| Number of Ethernet Ports | 1 |
| Total Number of HDMI Ports | 1 |
| Total PCIe Ports | 2 |
| Model Number | PRIME B550M-A/CSM |
| Manufacturer | ASUS |
| UPC | 192876755532 |
| Mfr Part Number | PRIME B550M-A/CSM |
| Item Type Name | ASUS Prime B550M-A/CSM AMD AM4 (3rd Gen Ryzen™) microATX commercial motherboard (PCIe 4.0, ECC memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, TPM, ASUS Control Center Express) |
| Item Weight | 1.3 Pounds |
| Item Dimensions L x W x H | 10.35"L x 2.03"W x 10.63"H |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 8 – Nov 10
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
THis is a very well rounded ASUS motherboard.
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
This is a no drama AM4 socket mopther motherboard with alot of cpu choices that drive longevity and value.
Reviewed in the United States on March 23, 2026 by BT
Great for teens to learn to build their on computer
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
My son 13 years old used this to build his own computer and it works great
Reviewed in the United States on August 11, 2020 by Marilia Neri
Super easy to build on
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
Wish it had built in wifi and maybe an ssd heat sink to cover it up but other than that super easy to work on for my first build great for the price
Reviewed in the United States on October 16, 2022 by Woodrow Augustus weaver
Great motherboard but don’t buy it build or upgrade computers
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
I love this motherboard, but wouldn’t recommend it for anyone who is new at either building or upgrading computers. It wouldn’t work with my old CPU so I had to buy a cpu that it would work with. The next nightmare was that it took forever to get the bios to upgrade. When I changed to the new CPU, I had bought to go with this motherboard I had a handful of other problems. It wouldn’t recognize my memory video card. Thus no monitor to even try and figure out what was wrong. It’s simply turned on. Luckily, it has led lights that help you to troubleshoot without a monitor. It took a couple of days of basically around the clock work to finally get it to recognize everything and work. Other than the hassles it gave me I’ve actually loved the motherboard. Just so you know, I didn’t buy any cheap junk either, everything I bought was high dollar. If I hadn’t known what I was doing, I would never have been able to get this to run, because even with my knowledge it was a nightmare.
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Reviewed in the United States on February 20, 2023 by Dan W. Douglass
Appears to be a well made motherboard
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
i have not finished the build yet, but so far it seems to be a very good mobo.
Reviewed in the United States on March 4, 2021 by Arthur Atlas
Bueno
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
Para su precio esta excelente. si queres algo mejor hay mejores opciones. Si tu presupuesto es ajustado esta esta re bien
Reviewed in the United States on January 17, 2024 by Christian Medina
Lo que esperaba
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
La verdad me sorprendió esta tarjeta madre, bien preparada para la tercera generación de AMD Ryzen,y buena para actualizar a futuro, tomen en cuenta que tiene puerto PCIe 4.0 osea que esta prepara para las tarjetas de vídeo de actual generación y la siguiente por ahora una buena inversión,, de todas formas actualizare la reseña si tengo inconvenientes
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Reviewed in the United States on August 18, 2020 by Rosmel J.
This board does NOT support BIOS flashback, despite the large ad on this Amazon page.
Style: Prime B550M-A/CSM (Pack of 1)
Size: Micro ATX
The motherboard (MB) itself works fine and was easy to work with for my build. My major issue is how it is being sold on Amazon and ASUS support. As of today, 06/14/2022, Amazon still shows a giant advertisement for the BIOS flashback feature. I didn't realize when I purchased the MB that despite the large ad promoting the feature, this MB does have it. My MB arrived with BIOS version 0805, and no surprise, would not run my 5600 chip. ASUS support was beyond useless, despite the ad for the BIOS flashback feature. This MB was being sold by ASUS, why not ship with an updated BIOS like other suppliers? It took some time and work, but AMD support came through with a loaner 3000 series chip I was able to use to update the BIOS and get my new chip working. AMD got a customer for life, but ASUS, nope, never buying from ASUS again. Come on Amazon, do the right thing and remove the BIOS flashback ad from this page!
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Reviewed in the United States on June 14, 2022 by Steam McQueen's