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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

  • Overview
  • Specs
  • 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): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Anonymous
1/ 5
If the board failed, you will be miserable 7/11/2020 4:05:41 PM

Pros: This is an average board, maybe price is a bit lower than other competitor's.

Cons: Tech support.

Overall Review: To the tech who claim over 90% of returned board are perfectly good board and imply customers are deceiving:
1. Your tech department determined the board is defected and issued RMA
2. There is no incentive for anyone who gut out the board with risk of damaging more expensive parts just to get the SAME board.
3. My time is valuable. If nothing wrong with the board, it does not make sense for anyone to take out the mother board, spend time and money and ship it to you, and then wait for a refurbished board in return. Back and forth, it would be almost two weeks.
4. Assemble a PC might be fun for you, but not for me. I have done my fare share of PC building in my earlier career and now once I build it, I just want it to run and don't want to deal with a dusty box.
5 You need to learn some people skills and logic.

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
2/ 5
Product came in defective 7/11/2020 10:29:10 AM

Pros: it came in

Cons: it came in defective

Overall Review: didn't work very disappointed

Did you find this review helpful?
Ownership: 1 day to 1 week
Verified Owner
5/ 5
JULY 2020 this board is a dream for its price and all the drivers eliminated the issues. 7/8/2020 5:59:28 PM

Pros: Not a drip of an issue and now use 3200oc and all is stable.

Cons: It had to do a recover from VGA mode then reaction a driver to initiate and automated response of many reboots and everything has been fine with the RX 570 I plugged in.

Overall Review: GREAT VALUE !

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great Board 7/6/2020 5:19:34 PM

Pros: The board is nice and compact, it does not have many PCI expansion slots but the available USB ports make up for it. Board turned on on the first try.

Cons: None so far.

Overall Review: I would recommend it.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great value 7/6/2020 8:31:48 AM

Pros: Came Ryzen 3000 ready
Easy install
Booted with no issues
Sleek looks
Great performance for the money
Perfect for any B450 build

Cons: No port for front panel usb type c (not really an issue since the board has a built in type c plug on the rear i/o)

Overall Review: Came Ryzen 3000 ready allowing for an easy, no hassle first time boot. Board is really good for the price. Would recommend to anyone looking to build on the B450 platform.

Did you find this review helpful?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Good board 6/26/2020 8:34:12 AM

Pros: Easy to work with.
M.2 slots are in good places for cooling
Bios was updated to handle ryzen 3 series
Reads 3600mhz memory xmp
Bios has lots of oc options

Cons: Bios load time, even on super fast is not as fast as my other gigabyte board but it’s not a substantial issue. More of an observation than a negative.

Overall Review: I would recommend this board for all budget builds. Great quality for the price.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works With Ryzen 5 3600 Out Of Box! 6/23/2020 6:11:46 PM

Overall Review: Worked with Ryzen 5 3600 out of box, great mobo.

3 out of 3 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
we had nothing but trouble with this motherboard, 6/23/2020 10:53:58 AM

Pros: no pros

Cons: We put everything together, started up and would shut off. tried all kinds of things nothings worked. We had to have a computer expert figure it out. (This was his accessment)
Suspect RAM error or Bios error, tested with current video card. System display driver and other updates halted due to restart loop.
Swapped RAM (2) 8 GB Dimms across many combinations of the 4 available slots. No success. Tested RAM in service PC, tests great.
Researched compatible RAM across brands, found existing RAM was not certified for use in this system. Notified customer, ordered new RAM – very specific! This motherboard and processor build had very few available chips that would yield the desired 3200 top speed. Rec’d RAM, installed without issues, bench-tested 2 hours.
Even though it has 4 slots will not work with 4 - 8 GB RAM.

Overall Review: We do not recommend the motherboard.

0 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Dear KEENE,

We sincerely apologize for any inconvenience this may have caused you.
Please trouble shoot the mainboard whether the issue is resolved.
• Unplug the ATX power, remove all components from mainboard.
• Remove the mainboard from chassis, place it on mainboard’s box.
• Clear the CMOS.
• Reseat the CPU and heatsink fan.
• Test with single memory module (non-ECC, un-buffered).
• Test with onboard video (CPU with APU or test with VGA card).
• Connect the monitor.
• Plug the 24 + 8 or 4 pins ATX power.
• Connect the chassis power switch to mainboard.
• Turn on the power to check if its post.

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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