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ASRock B450 Steel Legend AM4 AMD Promontory B450 SATA 6Gb/s USB 3.1 HDMI 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 3533+(OC)/ 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 3466+(OC)/ 3200(OC)/ 2933(OC)/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory
  • AMD Ryzen series CPUs (Raven Ridge) support DDR4 3466+(OC)/ 3200(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
ASRock B450 Motherboard and Its Product Box

ASRock B450 Steel Legend Motherboard

Powered by AMD B450 chipset, this motherboard supports up to 2nd generation AMD Ryzen processors of up to eight cores. This board looks great, featuring a camouflage-themed PCB, aggressive-looking heatsinks, and has onboard LED lighting that supports full spectrum of RGB colors with various effects, and can synchronize with other devices enabled with ASRock Polychrome. More than a pretty face, this B450 Steel Legend has quad DIMM slots supporting DDR4 3533+ (OC), two PCI-E x16 slots ready for AMD Quad CrossFireX, two M.2 slots, and two USB 3.1 Gen2 ports (rear Type-A + Type-C), so you have all essentials needed to build your new powerhouse. Moreover, this board is also constructed to be tough, with Super Alloy components, Full Spike Protection, and a PCI-E x16 slot covered by steel plate for better strength and less EMI.

If you're looking for a solid, budget-friendly yet feature-rich foundation for your dream system, look no further than ASRock B450 Steel Legend.

  • AMD AM4 Socket
  • Supports DDR4 3533+ (OC)
  • 2x PCIe 3.0 x16, 4x PCIe 2.0 x1
  • AMD Quad CrossFireX™
  • Graphics Output: DisplayPort and HDMI
  • 7.1 CH HD Audio (Realtek ALC892 Audio Codec), Nichicon Fine Gold Series Audio Caps
  • 6x SATA3, 1x Ultra M.2 (PCIe Gen3 x4), 1x M.2, (PCIe Gen3 x2) and SATA3
  • 2x USB 3.1 Gen2 (Rear Type-A + C)
  • 6x USB 3.1 Gen1 (2 Front and 4 Rear)
  • Realtek Gigabit LAN
Steel Legend Logo B450 Motherboard Image with Numbers 1-8 Indicating Important Aspect/Components
  1. Ultra USB Power
  2. 2x USB 3.1 Gen2 10Gbps
  3. Gold Audio Jacks
  4. Nichicon Fine Gold Series Audio Caps
  1. AMD AM4 Socket Supports 105W Water Cooling Digi Power Premium 60A Power Choke Nichicon 12K Black Caps
  2. Dual M.2 Sockets
  3. PCI-E Steel Slot
  4. Built-in Addressable LED ARGB Header RGB Header
Tough As Steel True Legend Banner with Gears and Metalworking Graphics

Steel Legend represents the philosophical state of rock-solid durability and irresistible aesthetics. Built around the most demanding specs and features, the Steel Legend series aims at daily users and mainstream enthusiasts! Providing a strong array of materials/components to ensure a stable and reliable performance, these motherboards fulfill every task with style!

Closeup shot of RGB lighting in the dark
RULE YOUR OWN LIGHTING WAY WITH POLYCHROME RGB

Steel Legend motherboards deliver stunning performance and superior aesthetics to rule your own colorful lighting way! ASRock offers highly comprehensive control to smoothly utilize the built-in RGB LEDs or connected LED strips, CPU fans, coolers, chassis and any other compatible RGB devices. Devices can be synchronized across the Polychrome RGB Sync-certified line of accessories as well.

ASRock polychrome sync and polychrome RGB logos

The addressable RGB LED header supports a WS2812B addressable RGB LED strip (5V/Data/GND) with a maximum power rating of 3A (5V) and a max of 80 LEDs with a length up to 2 meters.
The RGB LED header supports standard 5050 RGB LED strips (12V/G/R/B) with a maximum power rating of 3A (12V) and lengths within 2 meters.

All the compatible RGB LED products from memory sticks to power supplies and cases
Closeup picture Type 2280 M.2 Slot on the Motherboard
A SOLID M.2-SOLUTION PERFORMER

Dual M.2 for SSDs That Supports Type 22110 M.2
The B450 houses two of the world's fastest M.2 slots. One slot delivers up to PCIe Gen3 x4 32Gbps transfer speed, the other one supports PCIe Gen3 x2 & SATA3 6Gbps mode.

M.2 Armor
Good M.2 SSD protection is important for longevity and stability. ASRock has provided a complete M.2 armor solution on the B450 platform that makes SSDs run perfectly at low temperatures.

Close up of the motherboard USB ports
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 to support next-generation USB 3.1 Gen2 devices while delivering up to 10 Gbps data-transfer rates.

USB 3.1 Gen2 doubles the data transfer rate!
USB 3.1 Gen2 Chart two times faster than Gen1
USB 3.1 Gen2 Type-C doubles the charge speed!
USB 3.1 Gen2 Type-C two times faster than Gen1 Type-A
Chart showing the effects of Ultra USB Power
ULTRA USB POWER
ULTRA STABLE POWER

The +5V voltage on these motherboards is transferred from the +12V, supplying enough current to USB devices without dropping voltage directly from the PSU.

B450M
ANTISTATIC SHIELD

Protect your mouse and keyboard against static electricity. This especially lowers the chances of USB mouse lag or stuttering.

PURE AUDIO QUALITY

The USB speaker is best connected via Ultra USB Power ports to execute a pure current while offering high audio quality without distortion.

Closeup shot of the motherboard being split to show three layers with the middle being a glowing copper
2 oz Copper

This motherboard has been made with 2 ounces of copper inner layers. The copper materials for PCB layers were carefully selected to deliver lower temperatures and higher energy efficiency for overclocking.

Closeup of the power choke
PREMIUM 60A POWER CHOKE

ASRock's premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

closeup of the pci-e steel slot on the motherboard
PCI-E STEEL SLOT

The advanced PCI-E steel slot packed with a solid cover prevents any signal interference with graphics cards. It also ensures that heavy graphics cards can be safely installed in the PCI-E slot.

Super Alloy Motherboard Graphic Text
XXL Aluminum-Alloy Heatsink
Close of the Aluminum Ally Heatsink

Extra-large, aluminum-alloy heat sinks effectively take away heat from the MOSFET and chipset so that your whole system may perform more stably.

Premium 60A Power Choke
closeup of the power choke

Compared to traditional chokes, ASRock's premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

Nichicon 12K Black Caps
Closeup of the Nichicon 12K Black Caps

Supreme 12K black capacitors with lifespans of at least 12,000 hours. Compared to other counterparts on high-end motherboards that merely have lifespans of around 10,000 hours, ASRock applied Nichicon 12K Black Caps that offer 20% longer lifespans and provide more stability and reliability.

I/O Armor

Closeup of the protective cover on the motherboard

A newly designed protective cover for all of the crucial parts near the motherboard's rear I/O serve to protect the motherboard from damage by static electricity.

Sapphire Black PCB

Closeup of the bottom-right of the motherboard showing the PCB

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

High Density Glass Fabric PCB
A Graphic Comparing High Density Fabric versus Traditional

The motherboard's High Density Glass Fabric PCB design 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, the 2oz Copper PCB delivers lower temperatures and higher energy efficiency for overclocking.

Full Spike Protection Logo, An Orange Shield with the Service Text
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.

ASRock App Shop Compatible Media Logos
Live Update & APP Shop

The 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 B450 Steel Legend

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 month to 1 year
Verified Owner
3/ 5
Good but RGB software is trash... 12/9/2019 5:56:26 AM

Overall Review: RGB software is actual trash... Cannot even open the software and when I do, it bugs my RGB out..

Did you find this review helpful?
Manufacturer Response:
Dear Noah,

We sincerely apologize for any inconvenience this may have caused you.
Please try following to re-flash the RGB firmware.
• Uninstall the Polychrome RGB utility.
• Restart the system.
• Download and reinstall Polychrome RGB utility link below.
Link: http://asrock.pc.cdn.bitgravity.com/Utility/RGB/PolychromeRGB(v2.0.38).zip
• Open Command Prompt as Administrator.
• Type (or copy/paste); “ cd C:\Program Files (x86)\ASRock Utility\ASRRGBLED\Bin “ then press enter.
• Type “WriteFW.bat” under CMD with administrator to update RGB firmware. Try a few times fleash the FW if it does not worked.

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
Anonymous
Ownership: 1 month to 1 year
Verified Owner
3/ 5
11/30/2019 8:04:07 AM

Pros: Very nice looking board, well built, rgb is cool

Cons: Only con I have is that its not finding a HDMI signal, ive tried 5 different cables and 3 different monitors, if I connect a dvi/hdmi cable it works but straight hdmi will not, even if its straight to mobo or into my gpu, and now i see it isnt returnable.

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

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
Ownership: 1 month to 1 year
Verified Owner
4/ 5
Great Board watch out for the latest bios 11/28/2019 1:39:27 PM

Pros: Have used many of the B450 Pro motherboards in the past and decided to get this New RGB steel model. So far so good, it's a much better looking MB for really not much more money. Plenty of RGB and Fan headers as well as many overclocking options. So far so good.

Cons: Could use a couple of more USB ports, but its not a deal breaker. Also the latest bios for the ryzen 3000 series issues while using ryzen 2nd series cpu's. Blue screens every other minute. Finally had to go back 2 or 3 bioses to get it stable.

Overall Review: I build PC's for clients and I think this will be my new go to board for Ryzen.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
4/ 5
So far it's great! 11/2/2019 1:44:38 PM

Pros: Bright rgb
Looks amazing fits lots of builds
Ryzen 3600 ready, and works very well with it

Overall Review: Great for the price ASRock is doing a great job on the products

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
Won't support 4x8GB Corsair Vengeance RGB 3200MHZ 10/24/2019 6:07:46 PM

Overall Review: Won't support 4x8GB Corsair Vengeance RGB 3200MHZ supposedly works with 2x16GB but don't try to put 4x8GB cause it wont work. Non refundable even though its listed that it supports 3200mhz. Doesnt tell you that it only supports it on 2 slots not all 4......

3 out of 5 people found this review helpful. Did you?
Manufacturer Response:
Dear Chris,

Thank you for purchase and review.
For the memory speed, please visit link below under memory section for memory slot usage and speed.
However, the speed will be reduced base on slots usage.
Link: https://www.asrock.com/mb/AMD/B450%20Steel%20Legend/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
4/ 5
asrock didn't rock for me 8/28/2019 2:38:42 PM

Pros: very easy to install, clear printing on the mobo.

Cons: manual instructions are not as clear as I was hoping for and does not go into detail on what goes where

Overall Review: I really do like this mobo, however I am sending it back because after spending at least 10 hours over 3 days trying to get the sound to work it finally became so exasperating to continue doing the same thing over and over with no results that I decided to return this board. It would be nice if ASROCK company could at least attempt to answer my requests for help...maybe they can't read English?

0 out of 1 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
1/ 5
Defective 8/21/2019 8:31:55 PM

Pros: Don't know, never worked.

Cons: Lights up, but the front panel connectors doesn't work so can't start it with the power button on the case. Also tried jump starting it but still won't start. It lights up but the doesnt start.

Overall Review: Will contact Asrock and see if they can solve the issue or else I'm returning asap, so far a disappointment and a waste of my time and effort, I expected better from Newegg. Furthermore I but a case, a seasonic powersupply and ddr4 team force rams , only the case is functional, the power supply wouldn't even power on, the ram lights up but is not recognized by motherboard (Asus crosshair Hero VI) which should be compatible with the latest bios update which I had. So 3 out of 4 items are defective. That is just a massive letdown and knowing I'd have to go through the hassle of returning all the parts and recieving all the replacements is a drag. Was really looking forward to finishing my build but Unfortunately I can't.

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

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.
• Plug the 24 + 8 or 4 pins ATX power.
• Connect the chassis power switch to mainboard Panel1 (refer to user manual).
• Turn on the power to check if the fan spin (CPU and PSU).
• Populate memory and VGA card to post test if its get the power.

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
Anonymous
Ownership: 1 week to 1 month
Verified Owner
1/ 5
7/30/2019 9:26:04 AM

Pros: Looks nice, idk

Cons: I updated my UEFI to P2.40 to run with my new ryzen 3700X , it kept crashing every 5 minutes even though it says it is supported. It only started working properly when I updated to P2.60 which came out 3 weeks after ryzen launch. Also RGB polychrome is useless, no sync with anything.

1 out of 2 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued ASRock Customer,

We sincerely apologize for any inconvenience this may have caused you.
For the RGB sync, please visit link below for reference QVL RGB devices.
Link: https://www.asrock.com/microsite/PolyChromeRGB/

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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