MSI B550-A PRO ProSeries Motherboard (AMD Ryzen 5000, AM4, DDR4, PCIe 4.0, SATA 6Gb/s, M.2, USB 3.2 Gen 2, HDMI/DP, ATX)
Condition: Used - Like New
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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
Tuesday, Jul 1
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Style: MSI B550-A PRO ProSeries Motherboard
Features
- Support for 3rd Gen AMD Ryzen processors and future AMD Ryzen processors with BIOS update.Audio ports (Rear) : Realtek ALC892/ALC897 Codec
- Supports dual channel DDR4 memory up to 128 GB (4400 MHz)
- Lightning Fast Game experience: PCIe 4.0, Lightning Gen 4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 GEN 2
- Core Boost technology combines optimized power circuit layouts and digital power regulation which allows for precise and steady current delivery to the CPU
- AUDIO BOOST rewards your ears with studio grade sound quality for immersive gaming experiences
- Premium Thermal Solution: Heatsink thermal pad rated for 7W/mk and PCB with 2oz thickened copper
- Flash BIOS Button lets users flash the BIOS even without a CPU or memory
- Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
Description
Powered by AMD Ryzen AM4 processors, the MSI B550-A PRO combines stable functionality and high-quality assembly to solve professional workflows. Extended Heatsink Design and Core boost keep critical components operating reliably. PCIe 4.0 slots and M.2 with Shield Frozr provides the latest in device connectivity.
Brand: MSI
CPU Socket: Socket AM4
Compatible Devices: Personal Computer
RAM Memory Technology: DDR4
Compatible Processors: RYZEN 9
Chipset Type: AMD B550
Memory Clock Speed: 6
Platform: Windows 10
Model Name: MSIB550APRO
Memory Storage Capacity: 128 GB
RAM: DDR4
Memory Speed: 6
Number of USB 2.0 Ports: 2
Brand: MSI
Series: MSIB550APRO
Item model number: B550-A PRO
Item Weight: 3.31 pounds
Product Dimensions: 12 x 9.6 x 1.5 inches
Item Dimensions LxWxH: 12 x 9.6 x 1.5 inches
Number of Processors: 1
Computer Memory Type: DDR4 SDRAM
Voltage: 1 Volts
Manufacturer: MSI
Date First Available: June 16, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jul 1
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
Su rendimiento y compatibilidad la ponen en un punto bastante cómodo estar junto a otras board de la generación actual, llevo varios años con ella y hasta ahora no he tenido un solo problema con ella, la estoy utilizando en conjunto con una 5600X de AMD y antes estuve utilizándola con una 3400G, no tuvo problemas con ninguno de estos procesadores, su interfaz es bastante cómoda
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Reviewed in the United States on June 13, 2025 by Cristian S
Me encanto, todos los componentes se acoplen perfectamente
Reviewed in the United States on June 21, 2025 by Ray
Esta Placa Msi, es útil para Armado Gamma Media y sin invertir mucho te da las Conexiones necesarias y extras ,y su Formato ATX complementa eso, Si lo Compras ten Presente que tendrás una placa Completa por el precio.
Reviewed in the United States on May 31, 2025 by Edgar F.
Built my son a pc with this 32 gig ram 8 core cpu. And a 2tb SSD. Booted right up.
Reviewed in the United States on June 8, 2025 by slayer7912
So I only have had for couple of days but my biggest problem is have ran into is my wifi cards I have that plugs into the smaller pci slots right now I have I'm pci_e2 and only wifi is working not bluetooth, it is one of those that I need to plug into the onboard USB slots such as this board labeled as jusb1 or jusb2 i have tried both of these and my bluetooth will not work, I have tried the method of turning off psu and unplugging, then pushing power button down for 30secs and then hooking back up didn't help with this. Other then the bluetooth problem the rest of it is working I can feel my GPU running better with the faster pci 4 then the pci 3 i was using on my old board.
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Reviewed in the United States on May 16, 2025 by Dale B
It was as anticipated and expected. Good product
Reviewed in the United States on June 3, 2025 by Helpful Harry
This mobo is sturdy, reliable, long lasting, great value for the money, I had an accident while replacing a cooler and damaged a 5700X, the mobo was perfectly fine, I'm still using this now with a 5800X and is working great, good temperatures, good performance, the aesthetics of this mobo are not the best ones but come on, it is very cheap for everything you already get.
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Reviewed in the United States on May 1, 2025 by Spade
I bought this way back in February, and it didn't take too long before it just would not post one day. I used it in the morning, that afternoon it was no longer working. I apologize to AMD because I seriously though it was the processor. When I spoke to CS at MSI, they were super friendly and everything, we discussed the RMA process and I specifically requested that they test it with a processor, it's shows that in the documentation. Long story short, I bought this product, had a problem with it, had to pay to ship it back to them, when I get it back I put a brand new processor in it and oh look the CPU led is on. I spent hours debugging this and I finally found that if I use a single stick of ram in the DIMMB2 slot, I could get it to post. I can't have more than one stick and it has to be in that slot. Clearly an issue with the motherboard, and clearly they didn't test it with a processor. I need a computer to work so I bought one from another manufacturer and it's been solid from day one, and the flashback process took seconds and worked the first time. Not even close to the experience I had trying to flash this pos. Again sorry AMD, but thank you for promptly replacing my processor. Update: So I sent the AMD processor back and they returned a new one fairly promptly, kudos to them on that. Like I mentioned in my review above, in order to troubleshoot if it was the mobo or the processor, MSI was pushing me to update the firmware, which I had already done and I really did not want to do a second time, but it seemed to be the only way to get the ball rolling on this problem. I did exactly as they instructed, and it bricked my mother board. Now I have two problems. Because I needed a computer to work on, I ended up buying a different brand (which also needed to be flashed and I did it in a matter of minutes on the first attempt). I sent my board back to MSI for RMA. When I received it back I had already had a different setup working perfectly so I wasn't going to disassemble it all to try and use a motherboard that was questionable from the beginning. After a few months I was going to donate it to the son of a friend of mine to try and peek his interest in technology. When I assembled it together I realized that the motherboard was doing the same exact thing, like they either never reflashed it or they didn't do any sort of testing on it afterwards. I paid retail for this board, and then paid to have it shipped back to them for RMA, and they sent me back a product that was failing in the same exact way it was when I sent it. I will never purchase anything from MSI again, ever.
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Reviewed in the United States on March 5, 2022 by baxter the basset hound