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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.
Ownership: more than 1 year
Verified Owner
5/ 5
Great budget B450 board 7/31/2020 10:55:56 PM

Overall Review: I’ve bought two of em the past year and there have been not complaints besides the placement of the CMOS battery. It’s a little frustrating to have to remove the graphics card to replace it but other than that, great mobo!

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Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great B450 motherboard 7/31/2020 11:10:38 AM

Pros: Straightforward layout, easy to install, NVME and SATA slots on the motherboard easy to access and boot up immediately. Four slots for DDR4 RAM chips - excellent.

Cons: Front panel connectors at the bottom edge of the board - with all that space taken up by NVMe, PCIE and SATA connectors, a little fiddly to connect the power and reset buttons. Other than that, a great little mobo for the money.

Overall Review: Anyone looking to build a budget AM4 system, look no further - great little mobo for the money.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Very Good mobo on the "cheaper" side 7/30/2020 7:02:58 PM

Pros: -Won't cost you an arm and leg for a low end/budget gaming
-Has a lot of performance to offer
-Easy to upgrade BIOS
-Actually can plug a front USB-C port that might not be available on other mobos in this price range

Cons: -PS/2 will most likely be called to disappear, might not be relevent on newer cards like this one (that's pretty much the only downside I can find on this motherboard)

Overall Review: Very good bang for your buck if you're looking to build a mid-low end computer in a micro-ATX factor, I definitely recommend on budget builds.

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Anonymous
Ownership: less than 1 day
Verified Owner
5/ 5
Is this board updated for ryzen 5 3600 out of the box? 7/23/2020 12:32:49 PM

Overall Review: N/A

0 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
DOA, sadly 7/23/2020 12:26:35 PM

Overall Review: Bought one to replace a board from an old, functional build. All other components work in the pc, except this mobo.

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Anonymous
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Solid M-ATX MOBO 7/22/2020 2:22:47 PM

Overall Review: For the basic person who games often and some light streaming, its a good MOBO for any beginner to use, haven't OC'd my current CPU on it yet, but it should be capable to OC well.

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Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Ryzen3000 ready 7/19/2020 9:36:36 AM

Pros: it works

Cons: no on-board power on button, had to short the 2 pins to power on motherboard; but no big deal

Overall Review: Economic choice

2 out of 2 people found this review helpful. Did you?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Excellent motherboard. Works flawlessly. 7/18/2020 10:49:50 AM

Pros: - Board itself looks very crisp and clean, appears very well built.
- Accepted my G. Skill F4-3200C16D-16GVKB ram no problem at all. I just had to go into the BIOS and enable XMP profile and the RAM sticks went right to 3200mhz. No crashes after gaming and stress testing.
- Works great with the WD SN550 500gb NVME drive.
- posted right away without an issue using a Ryzen 5 2600 CPU.

Cons: - None

Overall Review: Excellent motherboard overall. I've been using for less than a week. No issues. It came with the latest BIOS version installed. 3.90

1 out of 1 people found this review helpful. Did you?
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