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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
  • Supports 105W Water Cooling (Pinnacle Ridge); Supports 95W Water Cooling (Summit Ridge); Supports 65W Water Cooling (Raven Ridge)
  • 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 (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): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
  • We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1, 2019 and December 24, 2019 you will have until January 31, 2020 to return your product. There's nothing additional that you have to do!
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Best mATX board I have ever used for a build 11/1/2019 5:12:37 AM

Pros: 2 M2 slots Is great. One is NVME and one is SATA. Lots of fan connectors. Nothing is hard to hook up at all. The SATA ports point back instead of up so video card slot doesn’t block the ports. With a BIOS update this board supports GEN 3 Ryzen so I can upgrade from my little Ryzen 3 1200 later on down the road although this little CPU is a baby monster. This guy has a second PCIe 16 slot too for later expansion of sort.

Cons: The only con is I couldn’t read the front panel header labeling on the board so I had to look at the manual and it was specific enough which direction the 2 pin power button cable went.

Overall Review: Would buy and use again. This was my first ASRock board I’ve ever bought.

1 out of 1 people found this review helpful. Did you?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
3/ 5
Be wary of side plug-ins for SATA devices 10/30/2019 12:46:35 PM

Pros: Seems well built given the price. Mount holes lined up perfectly with my case. Booted up perfectly on the first try. 4 USB 3.x ports, plus plenty of USB 2.0. Speedy Win10 boot with M2 NVMe SSD. Had plenty of mobo mounting screws plus M2 SSD mounting screws.

Cons: Major Con: The SATA cables do not plug into the board in the normal vertical orientation -- they must be plugged in sideways at the edge of the board and the cables project out laterally from the edge. I suppose in most builds this wouldn't be a problem but it was a BIG problem with my IN WIN CE685 case. The clearance from the 3.5" HDD cage to the edge of the mobo was less than 1/2 inch. As a result, only very low profile left angle SATA cables fit in that space, and I'm only able to plug in two cables rather than the four the board supports. As it is, I'll have to remove the mobo if I ever want to unplug those two cables. I wanted 3 SATA devices in this build, but guess I'll get by with two.

Backplate is pretty flimsy. Because of all the manipulations I had to do to get the SATA cables plugged in it was bent up a few times and had to be straightened. Probably not a problem in a normal build.

No BIOS documentation in the user manual, just a bunch of QR codes on the BIOS screens.

Overall Review: I recommend this IF you make certain that your case has space at the edge of the mobo for the SATA cable side plug-ins. I took off two stars for that. If I hadn't already purchased compatible memory and opened up all my purchases I probably would have returned the mobo and tried something else.

I'm not that experienced a builder but it seems like good design practice would be to keep all cables within the mobo footprint where they plug in. I saw in an earlier review that this SATA plug arrangement allowed them to use a video card that otherwise would have interfered. I can see that, but it still seems like a design flaw. And I blame the mobo, not the case.

My low cost, HTPC form factor, office-use build:

ASRock B450M PRO4 AM4 mATX
AMD Ryzen 3 2200G
16 GB Crucial Ballistix Sport 2666 MHz DDR4 DRAM
ADATA XPG SX8200 256GB NVMe SSD
WD Blue 1TB HDD - 7200 RPM SATA
IN-WIN Desktop Case CE685.FH300TB3
ORICO USB3.1 3.5 inch HDD Enclosure (for backup)
LG external USB DVD Writer GP65NW60

2 out of 3 people found this review helpful. Did you?
Anonymous
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Works great 10/25/2019 2:09:02 PM

Pros: Upgraded from a b350m pro4 to this because my old b350m wouldn't properly update the bios to run a ryzen cpu. This new b450m was plug and play with my new ryzen 5 2600.

Cons: Not the best board out there but for the price I cant complain

0 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
I ordered the wrong one but it worked 10/20/2019 5:44:49 PM

Pros: Micro Motherboard and a good one

Cons: Bought the wrong o e

Overall Review: Would recommend if you need it

0 out of 23 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5
Good overall board at this price 10/20/2019 6:37:53 AM

Pros: *This board does overclocking fairly well for being a b450 board. It's about good enough to bring most ryzen cpus clocked up to their max rated boost clock to all cores. An average ryzen 3600 can overclock to its boost frequency of 4.2ghz on all cores just fine with this board. Though I do suspect your story will vary depending on ur cpu as they are all rated for different amounts of power consumption, but the vrms on this board do seem to handle overvolting relatively ok temperature wise.
*Finally a budget board that has a plentiful amount of fan headers
*Has a wide range of support for all consumer based ryzen cpus up to the 3900x excluding thread ripper of course.

Cons: *This board's audio does not come with the ability re-assign audio inputs/outputs which is often a very welcome feature for those like me who tend to have multiple audio systems setup to one computer.
*Use of the m.2 drive slots disables the ability to use one of the sata ports on the board.
*The board's bios did not come ready for ryzen 3 unlike what many other reviewers here have stated and had to be updated to a newer bios using a loner cpu to bring support for ryzen 3000

Overall Review: *This board overall is a very fantastic budget board, so much so that for most bang for buck minded pc users and gamers alike you really don't need more than this board can give.
*The second graphics card slot is in such a position that it might as well not even be there since many matx cases would have a lot of trouble fitting ur average dual slot gpu there.

2 out of 2 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
3/ 5
Don't Plan to OC Your Memory 10/19/2019 7:08:18 PM

Overall Review: I liked this case because it has two M.2 slots, but the memory will not overclock. I'm running 4 sticks, and the tech tells me that the best I can do is 2400. With 2, I could go to 2667. Some processors allow up to 2933, but not the Ryzen 3 2200G (Raven Ridge). So, don't waste your money on 3000 RAM. This is a contradiction to their advertising above , which claims speeds up to 3400. First time trying ASRock; too bad it's going to be the last.

0 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Kenneth,

Thank you for purchase and review.
For the memory speed and usage of the slots, please visit link below under memory section.
It has the chart for CPU, memory type and slots usage.
Link: https://www.asrock.com/mb/AMD/B450M%20Pro4/index.us.asp#Specification

If you have any technical or warranty inquiry in the future, please contact us at https://event.asrock.com/tsd.asp
We will assist you shortly.

Thank you

ASRock Support
Tech Support Email: https://event.asrock.com/tsd.asp
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great budget mobo 10/19/2019 8:49:17 AM

Pros: Runs ryzen 3600 cpu out of the box
Price
Features

Cons: None

Overall Review: Great mobo for the price. Runs ryzen 3600 cpu out of the box, no need to update the bios but I did anyway which was very easy. I love that it came with the 2 screws needed to install the m.2 drives because the drives I got did not.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Excellent ! 10/18/2019 9:21:28 AM

Pros: Machine is used mostly for higher end business applications. Easy install, great bios software. Used g.skill memory and a Ryzen5 2600 cpu, great combination. Highly recommend.

Cons: did not find a one

Overall Review: gladly purchase again

Did you find this review helpful?
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