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ASRock B450M Steel Legend 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 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

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews
c0l_logo_asrock
c0_ASRock B450M Steel Legend Motherboard

ASRock B450M Steel Legend Motherboard

Powered by AMD B450 chipset, this motherboard flawlessly supports up to 3nd generation AMD Ryzen processors of up to 16 cores. This micro ATX board looks great, featuring a camouflage-themed PCB and aggressive-looking heatsinks. Its onboard LED lighting features full spectrum of RGB colors with various effects, and can synchronize with other devices that support ASRock Polychrome. With a micro ATX form factor, this B450M 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 the essentials needed to build your new powerhouse. Moreover, this board is 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 B450M Steel Legend.

  • AMD AM4 Socket
  • Supports DDR4 3533+ (OC)
  • 1 PCIe 3.0 x16, 1 PCIe 2.0 x16, 1 PCIe 2.0 x1
  • AMD Quad CrossFireX
  • Graphics Output: DisplayPort, HDMI
  • 7.1 CH HD Audio (Realtek ALC892 Audio Codec), Nichicon Fine Gold Series 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
c1_slots & connectors
 1_Steel Legend series

Steel Legend represents the philosophical state of rock-solid durability and irresistible aesthetics. Built around 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. A motherboard that fulfills every task—with style!

 2_Polychrome RGB
Rule Your Own Lighting Way - Polychrome RGB

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

* The addressable RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and length within 2 meters.

* The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters.

201_Polychrome RGB
 3_Dual M.2 for SSD
Dual M.2 for SSD

Two of the world’s fastest M.2 slots. One delivers up to PCIe Gen3 x4 32Gb/s transfer speed, the other one supports SATA3 6Gb/s mode.

* Please refer to the product specification page for more detail.

4_Dual USB 3.1 Gen2
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.

401_Dual USB 3.1 Gen2
 5_2oz Copper
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.

6_Premium 60A 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.

 7_PCI-E Steel Slot
PCI-E Steel Slot

The advanced PCI-E Steel Slot packed with solid cover that prevents any signal interference with graphics cards. It also allows the heavy graphics cards to be well-installed in the PCI-E slot safely.

8_Super Alloy
801_XXL Aluminum Alloy Heatsink

XXL Aluminum Alloy Heatsink

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

802_Premium 60A Power Choke

Premium 60A 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.

803_Nichicon 12K Black Caps

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.

804_IO Armor

I/O Armor

A new designed protective cover for all of the crucial parts near the motherboard's rear I/O, so that they won't easily be damaged by static electricity.

805_Sapphire Black PCB

Sapphire Black PCB

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

806_High Density Glass Fabric PCB

High Density Glass Fabric PCB

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

807_2oz Copper PCB

2oz Copper PCB

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

9_Full Spike Protection

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.

10_Live Update & APP Shop

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 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
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 month to 1 year
Verified Owner
3/ 5
I really like the design but was DOA 8/1/2020 9:29:32 PM

Pros: Multiple M.2 slots, LED lights.

Cons: Difficult to reset CMOS and determine errors

Overall Review: I really like the way the mobo is designed but unfortunately is DOA and wasn’t able to build my pc until after I surpassed the return policy.

Did you find this review helpful?
Anonymous
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Perfect 7/29/2020 10:17:37 PM

Pros: RGB
BEAUTY
Rgb headers
Fan headers
Price

Cons: Only two sata cables

Overall Review: RGB software took me a second to find but i got it and it works perfect.

Did you find this review helpful?
Anonymous
Ownership: 1 week to 1 month
Verified Owner
1/ 5
Defective motherboard 7/27/2020 6:48:20 PM

Cons: The motherboard came with a big issue it doesn’t work...

Overall Review: I bought the 3 year warranty plan and I try to get it replaced it’s “not eligible for returns”

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

Thank you for purchase and review.
We will be more than happy to assist you.
Please contact us with detail problem description at https://event.asrock.com/tsd.asp

Thank you

ASRock Support
Tech Support Email: https://event.asrock.com/tsd.asp
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Potential flaw on my board? 7/24/2020 5:21:28 PM

Overall Review: This isn't a final review. Unless I'm unable to edit lol... take a look in the photo at the cpu fan headers. If I'm not mistaking this wouldn't stop me from plugging into it.

Did you find this review helpful?
Anonymous
5/ 5
Would this work for the ryzen 5 1600? 7/18/2020 5:36:38 PM

Overall Review: Would it work?

1 out of 1 people found this review helpful. Did you?
Ownership: 1 week to 1 month
Verified Owner
1/ 5
ethernet wont work 7/14/2020 8:18:08 PM

Overall Review: ethernet wont work

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

Sorry for any inconvenience this may have caused you.
Please trouble shoot the mainboard whether the issue is resolved.
• Unplug the ATX power.
• Clear the CMOS (refers to user manual link: https://download.asrock.com/Manual/B450M%20Steel%20Legend.pdf ).
• Load the BIOS setting default.
• Download and install the LAN drivers following link: https://download.asrock.com/Drivers/All/LAN/LAN(v10031_10232018).zip
• Check the router/switch are working normally.
• Check LAN cable is working.

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
5/ 5
good looking and performing motherboard 7/13/2020 3:13:19 PM

Pros: looks good
most recent Bios installed
works out of the box with a ryzen 5 3400g

Cons: When received was missing some items (I/O shield etc) but was able to install the board itself no issues.
Wound up contacting ASRock support and once they confirmed the purchase they sent me the items I was missing which arrived today 07/13/2020.

Overall Review: Initially was disappointed but customer support from ASRock made it right and my son is now very pleased that all the RGB now works and has the I?O shield installed.

Did you find this review helpful?
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Lovin it 7/13/2020 7:51:54 AM

Overall Review: Great product. Worked with my r5 3600 out of the box without the need of a bios update. Has rgb and the design is gorgeous. Amazing product even considering the low price

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