ASROCK B550 STEEL LEGEND (AM4, AMD PROMONTORY B550, DDR4, USB3.2, SATA3)

Model

Brand

ASRock

Model

B550 STEEL LEGEND

Supported CPU

CPU Socket Type

AM4

CPU Type

Supports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series / 3000 G-Series Processors *

* Not compatible with AMD Athlon Processors.
* BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU. Refer to ASRock website for CPU support list.

Chipsets

Chipset

AMD B550

Memory

Number of Memory Slots

4x288pin (DDR4)

Memory Standard

DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 (AMD Ryzen series CPUs (Vermeer & Matisse), APUs (Cezanne & Renoir) support)

DDR4 3600+(OC) / 3466(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 (AMD Ryzen series APUs (Picasso) support)

Maximum Memory Supported

128GB

Channel Supported

Dual Channel

ECC Supported

Yes

* For Ryzen Series APUs (Picasso, Cezanne and Renoir), ECC is only supported with PRO CPUs.

Buffer Supported

Un-buffered

Expansion Slots

PCI Express 4.0 x16

1 x PCI Express 4.0 x16*

* Actual support may vary by CPU.
* Supports NVMe SSD as boot disks.

PCI Express 3.0 x16

1 x PCI Express 3.0 x16*

* Supports NVMe SSD as boot disks.

PCI Express x1

2 x PCI Express 3.0 x1

Other Slots

1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module
15µ Gold Contact in VGA PCIe Slot (PCIE1)

Storage Devices

SATA 6Gb/s

6 x SATA 6Gb/s*

* M2_2 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled.

M.2

1 x Hyper M.2 Socket (M2_1), supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Vermeer, Matisse) or Gen3x4 (32 Gb/s) (with Cezanne, Renoir and Picasso)*

1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)*

* Supports NVMe SSD as boot disks.
* Supports ASRock U.2 Kit.

SATA RAID

0/1/10

Onboard Video

Onboard Video Chipset

Supported only by CPU with integrated graphic

Onboard Audio

Audio Chipset

Realtek ALC1220

Audio Channels

7.1 Channels

Onboard LAN

LAN Chipset

Dragon RTL8125BG

Max LAN Speed

10/100/1000/2500Mbps

Rear Panel Ports

Back I/O Ports

2 x Antenna Mounting Points
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.

Internal I/O Connectors

Onboard USB

2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
1 x Front Panel Type C USB 3.2 Gen1 Header (Supports ESD Protection)

Other Connectors

1 x SPI TPM Header
1 x Power LED and Speaker Header
2 x RGB LED Headers*
2 x Addressable LED Headers**
1 x CPU Fan Connector (4-pin)***
1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)****
5 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)*****
1 x Front Panel Audio Connector (15µ Gold Audio Connector)
1 x Dr. Debug with LED

* Support in total up to 12V/3A, 36W LED Strip.
** Support in total up to 5V/3A, 15W LED Strip.
*** The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
**** CPU_FAN2/WP_3A supports the water cooler fan of maximum 3A (36W) fan power.
***** The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
***** CPU_FAN2/WP_3A, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP, CHA_FAN4/WP and CHA_FAN5/WP can auto detect if 3-pin or 4-pin fan is in use.

Physical Spec

Form Factor

ATX

LED Lighting

RGB

Dimensions (W x L)

12.0" x 9.6"

Power Pin

1 x 24-pin ATX Power Connector (Hi-Density Power Connector)
1 x 8-pin 12V Power Connector (Hi-Density Power Connector)
1 x 4-pin 12V Power Connector (Hi-Density Power Connector)

Windows 11 Compatibility

Windows 11

Supported