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ASRock B450M PRO4 AM4 AMD Promontory B450 SATA 6Gb/s USB 3.1 HDMI Micro ATX AMD Motherboard

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  • AMD Promontory B450
  • AMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Picasso) support DDR4 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Summit Ridge) support DDR4 3200+(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
B450M B450M
B450M Pro4
  • AMD AM4 Socket
  • Supports DDR4 3200+ (OC)
  • 1 PCIe 3.0 x16, 1 PCIe 2.0 x16, 1 PCIe 2.0 x1
  • AMD Quad CrossFireX™
  • Graphics Output:HDMI, DVI-D, D-Sub
  • 7.1 CH HD Audio (Realtek ALC892 Audio Codec), ELNA Audio Caps
  • 4 SATA3, 1 Ultra M.2 (PCIe Gen3 x4), 1 M.2 (SATA3)
  • 2 USB 3.1 Gen2 (Rear Type-A+C)
  • 6 USB 3.1 Gen1 (2 Front, 4 Rear)
  • Realtek Gigabit LAN
B450M
AMD StoreMI Technology

A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive. SSDs are fast, but expensive, and offer minimal capacity. Mechanical hard drives boast large capacity for a low price, but are much slower than an SSD. AMD StoreMI technology "combines" these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds: SSD responsiveness, and mechanical hard disk capacity. You can also use up to 2GB of RAM as a last-level cache for ultra-fast data.

B450M
Dual M.2 For SSD

Equipped with M.2 slot that supports both SATA3 6Gb/s and PCIe Gen3 x4 Ultra M.2 interface that pushes data transfer speeds up to 32Gb/s, and is compatible with ASRock's U.2 Kit for installing some of the world's fastest U.2 PCIe Gen3 x4 SSD.

B450M
Dual USB 3.1 Gen2 (Type-A + Type-C)

This motherboard has a pair of onboard Type-A and Type-C USB 3.1 Gen2 ports built on the rear i/o for supporting next generation USB 3.1 Gen2 devices and to deliver up to 10 Gbps data transfer rates.

USB 3.1 Gen2 doubles the data transfer rate

B450M

USB 3.1 Gen2 Type-C doubles the charge speed!

B450M
B450M
2oz Copper

It comes with 2 ounces copper inner layers, using only carefully selected copper materials for PCB layers, delivering lower temperature and higher energy efficiency for overclocking.

B450M
Premium 42A Power Choke
B450M

Compared to traditional chokes, ASRock's premium 42A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Sapphire Black PCB
B450M

Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.

High Density Glass Fabric PCB
B450M

High Density Glass Fabric PCB design that reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.

2oz Copper PCB
B450M

Using only carefully selected copper materials for PCB layers, 2oz Copper PCB delivers lower temperature and higher energy efficiency for overclocking.

B450M
Digi Power

This motherboard uses a next generation Hybrid Digi Power design to bring precise control and smooth power. With the ensured efficient and clean power delivery to the CPU, the stability and lifespan of motherboard is also greatly enhanced.

B450M
ELNA Audio Caps

Who says high quality audio is only available on high-end motherboards? ASRock applied ELNA audio capacitors on mainstream and entry-level motherboards! Compared with traditional solid caps, the leakage current of ELNA audio caps is merely 3uA. This is the key to reduce noise level significantly and satisfy even the pickiest audiophiles.

B450M
Solid Capacitor Design

ASRock applied solid capacitors on this motherboard. With these solid caps, this motherboard is allowed to perform more stably and ensure longer lifetime.

B450M
3 Graphics Outputs

Complete with all three types of most used connectors! Packed with a D-Sub + DVI-D + HDMI combo. Plus the HDMI port supports 4K resolution.
*Supported with A-Series APUs only.

B450M
Triple Monitor

Graphics, graphics and even more graphics! You've demanded for more eye candy, so this motherboard supports Triple Monitor. You may choose up to three display interfaces from the rear i/o to connect monitors and use them simultaneously without installing another graphics card.
*Supported with processors with integrated graphics only.

B450M
A-Tuning

A-Tuning is ASRock's multi purpose software suite with a new interface, more new features and improved utilities.

B450M
Full Spike Protection

Some sensitive digital components on the motherboard are vulnerable to power surges, the excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.

B450M
Live Update & APP Shop

ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.


Learn more about the ASRock B450M PRO4

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great entry level price and advanced features for the price! 12/5/2019 9:04:18 AM

Pros: Great features, quick performance.

Cons: Board is hard to read without the accompanying manual
Have to make sure you load ALL of the updated drivers for the board otherwise some windows installations will not take advantage of the full features of the board.

Overall Review: Can't go wrong with this board for the features and the price. I purchased two of these and will be purchasing more.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works great with headless Ryzen 5 3600 12/4/2019 3:57:33 PM

Pros: - Ryzen 5 3600 CPU worked out of the box, no BIOS update was needed
- Boots headless (without GPU) without complaining

Cons: - Onboard Realtek NIC requires non-free firmware

Overall Review: The motherboard was easy to set up and is working flawlessly.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great budget board. 12/1/2019 1:20:06 PM

Overall Review: Absolutely no issues, straightforward build, first time post. A bit memory finicky but most Ryzen boards are.

Did you find this review helpful?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Working as intended 11/30/2019 11:57:57 AM

Pros: It works great and looks nice.

Cons: None really.

Overall Review: It works as needed. Not much else to say. It worked out on my budget.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Good board 11/30/2019 8:45:48 AM

Pros: Installed easily and powered up without a problem

Cons: If you have never installed a board before the manual was difficult to read. For example making sure I had the correct PCIE 16 for a video card, I had to look at the diagram on the second page with the slots numbered 1, 2,3 etc. then had to page back around 20 pages to have that translated into the PCIE description. What speed memory to buy was confusing. Fortunately there were several builds on youtube with this board

Overall Review: Overall I would highly recommend this board

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
4/ 5
Best price in it class 11/29/2019 11:35:32 AM

Pros: Good motherboard.
Supports Ryzen 5 2600 without flashing.

Cons: Has only 1 M.2 PCIe slot.

Overall Review: I have max out the PCIe lanes. Remember to purchase the correct CPU if you are planning on using all of the interface slots (sata, PCIe and M.2) The PCIe lanes are limited to the CPU and not the board. I do recommend this board for anyone looking for a good budget build.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
An inexpensive build - with one surprise. 11/29/2019 12:54:13 AM

Pros: Price. Compact size. HDMI out.

Cons: None so far.

Overall Review: Long story short: I thought that the motherboard was DOA. I connected 3 different power supplies (1080W, 850W and 420W). No POST, no video and the fans would not spin. It took me hours of fumbling - until I tested the voltage on the power cable with a DVM. The power strip put-out a measly 16 volts(!) - instead of 120 volts. After ditching the power strip, the board powered-up with no issues.

MOBO: ASRock B450M Pro4
CPU: AMD Ryzen 3 2200G
RAM: OLOy WarHawk (Hynix chips) 16GB 3200Mhz

P.S. The on-chip video and audio work under Linux. (The audio required a little tinkering - however.)

1 out of 1 people found this review helpful. Did you?
Anonymous
Ownership: 1 month to 1 year
Verified Owner
3/ 5
Great board bug very disappointed 11/27/2019 12:35:48 PM

Pros: Fast board and almost easy set up

Cons: Default bios post is 1 sec so doesn't show on screen
Most of the time the bios doesn't show at all even with a 10 second timer
When you hit keys to setup bios you get a black screen and pc locks up

Overall Review: The board works but it's getting really bad when you try to do anything with it like boot from another hard drive or even change a setting in the BIOS

Did you find this review helpful?
Manufacturer Response:
Dear Valued ASRock Customer,

We sincerely apologize for any inconvenience this may have caused you.
Please trouble shoot the mainboard below whether the issue is resolved.
• Unplug the ATX power.
• Clear the CMOS (refers to manual page 26 link: http://asrock.pc.cdn.bitgravity.com/Manual/B450M%20Pro4.pdf ).
• Load the BIOS setting default.
• Reseat the CPU and heatsink fan.
• Test with 1 x memory module, switching another memory if its same issue.

If you have any technical support inquiry, please contact us at http://event.asrock.com/tsd.asp
We will assist you shortly.

Thank you

ASRock Support
Tech Support Email: http://event.asrock.com/tsd.asp
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