ASRock B550 STEEL LEGEND Motherboard

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ASRock B550 Steel Legend AMD AM4 ATX

ASRock B550 Steel Legend AMD AM4 ATX

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  • Supports 3Rd Gen AMD AM4 Ryzen / Future AMD Ryzen Processors
  • Supports DDR4 4733+ (OC)
  • 14 Power Phase Design, Digi Power, Dr. MOS
  • 1 Pcie 4.0 X16, 1 Pcie 3.0 X16, 2 Pcie 3.0 X1, 1 M.2 Key E For Wifi
  • Graphics Output Options: HDMI, Displayport
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Suggested PC builds

AMDdicted (starting from 581)

Specifications Overview

Model
  • B550 STEEL LEGEND
  • 90-MXBDF0-A0UAYZ
Release Date June 2020

* First availability for purchase, it may not correspond to the actual market launch date.

Socket AM4
Form factor ATX
Chipset AMD B550
Supported Memory DDR4
2133Mhz 2400Mhz 2666Mhz 2933Mhz 3200Mhz 3466Mhz 3600Mhz 3733Mhz 3800Mhz 3866Mhz 4000Mhz 4133Mhz 4200Mhz 4266Mhz 4333Mhz 4533Mhz 4600Mhz 4666Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support
* ECC memory support also depends on the CPU memory controller
Audio Chipset Realtek ALC1220
Audio Channels 7.1 Channels
LAN Chipset Dragon RTL8125BG
Max LAN Speed 10/100/1000/2500Mbps
SLI Support
CrossFire Support
RAID Support
Back I/O Ports
  • - 2 x Antenna Ports (on I/O Panel Shield)
  • - 1 x PS/2 Mouse/Keyboard Port
  • - 1 x HDMI Port
  • - 1 x DisplayPort 1.4
  • - 1 x Optical SPDIF Out Port
  • - 1 x USB 3.2 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
  • - 1 x USB 3.2 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
  • - 2 x USB 3.2 Gen1 Ports (Supports ESD Protection)
  • - 4 x USB 2.0 Ports (Supports ESD Protection)*
  • - 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
  • - HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
  • * Ultra USB Power is supported on USB_34 ports.
  • * ACPI wake-up function is not supported on USB_34 ports.
Wireless LAN
PCI-Express x16 Slots 2
PCI-Express x4 Slots 0
PCI-Express x1 Slots 2
SATA 6 Gbps Ports 6
SATA Express Ports 0
M.2 Ports 3
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 / 22110 - M Key
  • 2230 - E Key
RAM Slots 4
Maximum Supported RAM 128 GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0

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