ASROCK B450M PRO4 R2.0 Socket AM4/ AMD B450/ DDR4/ SATA3&USB3.2/ M.2/ Micro ATX Motherboard
Condition: New
$172.06
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This item is eligible for return within 30 days of receipt
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Availability:
Only 2 left in stock, order soon!
Arrives
Nov 22 – Nov 29
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At a glance
- Condition
- New
- Model
- B450M PRO4 R2.0
- Storage
- 12 GB
- Dimensions
- 10.3"L x 2.5"W x 10.9"H
- Weight
- 1 kg
- CPU Socket
- Socket AM4
- RAM Memory Technology
- DDR4
- Warranty
- 3 years
- Works with
- Personal Computer
Features 5
- ASRock USB 3.2 Gen2 Type-A Port (10 Gb/s)
- ASRock Ultra M.2 (PCIe Gen3 x4)
- ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
- ASRock Live Update & APP Shop
- Supports AMD AM4 Socket Ryzen 2000, 3000 and 5000 Series Desktop Processors
Description
Mfr Part Number:B450M PRO4 R2.0 Unique Feature: ASRock USB 3.2 Gen2 - ASRock USB 3.2 Gen2 Type-A Port (10 Gb/s) - ASRock USB 3.2 Gen2 Type-C Port (10 Gb/s) ASRock Super Alloy - Premium 42A Power Choke - Sapphire Black PCB - High Density Glass Fabric PCB - 2oz Copper PCB ASRock Ultra M.2 (PCIe Gen3 x4) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update & APP Shop CPU: Supports AMD AM4 Socket Ryzen 2000, 3000 and 5000 Series Desktop Processors Digi Power design 10 Power Phase design Chipset:AMD Promontory B450
Specs 32
| Brand | ASRock |
|---|---|
| CPU Socket | Socket AM4 |
| RAM Memory Technology | DDR4 |
| Compatible Processors | AMD Ryzen 5000/4000/3000/2000 Series |
| Chipset Type | AMD B450 |
| Memory Clock Speed | 1800 GHz |
| Platform | Android |
| Model Name | B450M PRO4 R2.0 |
| Memory Storage Capacity | 12 GB |
| Processor Socket | Socket AM4 |
| Ram Memory Maximum Size | 64 GB |
| Main Power Connector Type | ATX |
| Graphics Card Interface | Integrated |
| Memory Slots Available | 4 |
| Number of Ports | 10 |
| S/PDIF Connector Type | Optical |
| System Bus Standard Supported | SATA 3 |
| Total SATA Ports | 4 |
| USB 2.0 | 10 |
| Total Usb Ports | 6 |
| Number of Ethernet Ports | 1 |
| Total Number of HDMI Ports | 1 |
| Total PCIe Ports | 3 |
| Chipset Family | AMD B450 |
| Model Number | B450M PRO4 R2.0 |
| Manufacturer | ASRock |
| Number of Items | 1 |
| Global Trade Identification Number | 93 |
| Built-In Media | - Quick Installation Guide, Support CD, I/O Shield - 2 x SATA Data Cables - 2 x Screws for M.2 Sockets |
| Item Weight | 1 kg |
| Mfr Part Number | B450M PRO4 R2.0 |
| Item Dimensions L x W x H | 10.3"L x 2.5"W x 10.9"H |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 22 – Nov 29
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
Got this board after 2 failed MSI boards.
Style: Motherboard
This ASRock motherboard has been exceptional right from the first boot. It has lots of features and has been easy to set up. It accepted the Ryzen 5 3400G CPU with no problems and it is running just fine. Paired it with some G.Skill RAM and a Samsung NVMe M.2 drive (it has 2 NVMe slots and 4 SATA headers) and put them in an MATX TD Gamer case and it's a cool little system. I'll have to wait and see if it holds up in the long run. I've used many ASRock products in the past and with the exception of a few bad caps that I easily replaced (after 2 years use) on a system I built for my brother, they've always been good. Those bad caps were back when lots of manufacturers were having issues with capacitors anyway.
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Reviewed in the United States on January 24, 2026 by Kindle Customer
ASROCK B450M PRO4 R2.0 Mobo
Style: Motherboard
I'm not a fan of the UEFI BIOS but I'm still enjoying the ASRock brand. I'm hoping for the same ASRock quality as previous boards from them and have no reason to doubt the quality! Installation was uneventful and typical with my only having to dig up a few screws because it has more standoffs than the older one. Been running a FX6120 for a few years now and the old 880G is showing it's age in a place where multiple cores are the thing. Popped a Ryzen 3700X 8 core and the previous power consumption of 95w went down and the thread count is doubled (both are 3.6 GHz)... Running 16 GB of memory and a 512 GB Samsung NVMe drive for the OS (multiple boot) and I could put W11 on if I felt the need (but I don't think so!). Four RAM slots and a list of onboard goodies, I haven't tested it with an old PCIe to SATA controller yet but it has the ability to take up to 6 drives. I have 7 in the older tower and a few 1 TB that I can probably get moved to a single 3 TB in case that controller doesn't get along with the new stuff. No need to update the BIOS version because it was shipped with the latest available for the mobo. Build quality seems on point and the heatsinks and components are running with low temps and no need to reapply any thermal paste. For around eighty or so USD I am pleased with the amount of options and settings available and hope it will run for the next few years flawlessly, as the old 880G is far beyond ten years of faithful service and has carried the torch well for over a decade. Come get some.... Recommended! SprayMaX wuZ hEEr....🖖😁👍
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Reviewed in the United States on October 1, 2025 by SprayMax Headroom
Works as advertised
Style: Motherboard
Con...Shipping time was almost 2 weeks... Pro...budget friendly, solid Mobo that supports Ryzen 2000 series processors all the way to Ryzen 5000 series... Easy overclocking in the Bios... M.2 support... Comes with a Easy to understand manual (for newer PC builders)... I had a power surge that bricked my original mobo that only supported Ryzen 1k and 2k processors (I have a Ryzen 7 2700x overclocked to 4.3ghz)...This Mobo is an updated version of my original mobo and the Bios has been updated for Ryzen 5000 processors, which allows me to upgrade my processor as a nice little Christmas gift for myself. Installation was super easy, and I was back up and running in about 45 minutes...unless you are looking to upgrade past Ryzen 5000 processors and use ddr5 ram, this mobo will get you going without hitting the piggy bank too hard..
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Reviewed in the United States on September 26, 2024 by danny
Buen producto
Style: Motherboard
Buen producto
Reviewed in the United States on July 27, 2026 by Iván Sebastián Gutiérrez Solórzano
Worth it
Style: Motherboard
Got one just to run MS office on 11, paired it with a AMD Ryzen 3 3200G w/ Graphics and 16Gigs of memory in the 2nd and 4th slot , just read the instructions… I had to manually set my memory speed in Bios on both MBs , so be vigilant. Running Crucial 2TB in the M.2 slot, the 2nd one is shared lane so again, read the instructions… My only complaint, knocked a star, for what it is, the primary M.2 slot is right next to one of the PCI slots, this causes a bit of a problem if you plan on using a substantial M.2 cooler and want a card in the slot. I liked this MB so much.. I bought another, this one is again intended to run MS Office but also some heavier business applications. So this one got a Ryzen 5 and 32mb of ram and another Crucial 2TB in the primary M.2 slot. Connectivity ,thankfully I bought the Ryzen 3 first as you need to update the Bios to run the Ryzen 5, and you cannot boot to Bios with the 5 or without a Chip, so find a PC shop or buddy with a another processor if you going to run a 5. So I pulled the 3 and updated the other MB before putting in the 5. Everything posted the 1st time, remember it’s going to will “squirm” a bit on your 1st post, just hang with it. Looks good, memory capacity in both is 16 / 64 and I believe it will go to 128 .
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Reviewed in the United States on October 28, 2025 by RAMairGTO72
Great slightly older board that works with most AM4 CPUs.
Style: Motherboard
I needed to get a motherboard that worked with my Ryzen 3 3200G CPU that I had lying around in a box, so after getting a used one off eBay that needed a BIOS update to run it (and needed an older processor to be able to do so), I decided to just hit PC Parts Picker and find one that would likely work straight out of the box, which led me to this. My main PC in my studio is using an ASRock board, so I knew I could trust the brand - in fact, the boards are almost identical, but not quite. This mounted perfectly in my microATX rack case, the back panel lining up perfectly with everything in my case. It doesn't generate too much heat, and it runs really well. The BIOS was updated to the latest versions straight out of the box, which meant it worked with my 3200G right out of the gate. ASRock make pretty good boards, would highly recommend.
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Reviewed in the United States on April 22, 2025 by thinksojoe
A disappointed waste of money.
Style: Motherboard
I just would have waited For the motherboard that I was gonna get three days later then I wouldn't have made a mistake and bought the worst motherboard I've ever bought. This motherboard has been flaky ever since I bought it. It's brand new and I don't know if it needs a BIOS update or what, but how am I supposed to give it a BIOS update if I can't even operate it? This motherboard is terrible. The price is not even worth it. Nowhere near worth it. The USB connection issues with this motherboard was the most annoying. I couldn't use the front panel USB ports and I could barely use the back panel USB ports. The last thing I did was try to update my graphics card, the monitor turned off and never came back on. A hundred bucks down the drain with this motherboard. This is the main reason when I have to replace something, I replace it with the same exact thing because you can't trust every product out here. This is one of them.
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Reviewed in the United States on October 5, 2025 by Tonyamazin
Solid and reliable.
Style: Motherboard
Solid workhorse. It's been running my TrueNAS setup nonstop. Great IO compatibility, plenty of compatible RAM to put in it (if you can even afford them. Q4 2025 amirite? 😂). Only needed a quick BIOS update to support one of my CPUs. Thankfully it's a really easy process.
Reviewed in the United States on December 4, 2025 by MikeDev101