Motherboard Asrock B550m Steel Legend Am4

– Digi Power design

– 10 Power Phase design

*Not compatible with AMD Athlon™ Processors.

– 4 x DDR4 DIMM Slots

– AMD Ryzen series CPUs (Vermeer) support DDR4 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 ECC & non-ECC, un-buffered memory*

– AMD Ryzen series CPUs (Matisse) support DDR4 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 ECC & non-ECC, un-buffered memory*

– AMD Ryzen series APUs (Cezanne) support 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 ECC & non-ECC, un-buffered memory*

– AMD Ryzen series APUs (Renoir) support 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 ECC & non-ECC, un-buffered memory*

– AMD Ryzen series APUs (Picasso) support DDR4 3333+(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory*

– Max. capacity of system memory: 128GB**

– Supports Extreme Memory Profile (XMP) memory modules

– 15µ Gold Contact in DIMM Slots

– DirectX 12, Pixel Shader 5.0

– Shared memory default 2GB. Max Shared memory supports up to 16GB.**

– Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers

– Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096×2160) @ 60Hz

– Supports DisplayPort 1.4 with max. resolution up to 5K (5120×2880)@120Hz

– Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required)

– Supports HDR (High Dynamic Range) with HDMI 2.1

– Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports***

– Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports

– Supports Microsoft® PlayReady

*Actual support may vary by CPU

**The Max shared memory 16GB requires 32GB system memory installed.

***Picasso supports HDCP 2.2 with HDMI 2.0 Port

– Premium Blu-ray Audio support

– Supports Surge Protection

– PCB Isolate Shielding

– Individual PCB Layers for R/L Audio Channel

– Gold Audio Jacks

– Nahimic Audio

– Dragon RTL8125BG

– Supports Dragon 2.5G LAN Software

– Smart Auto Adjust Bandwidth Control

– Visual User Friendly UI

– Visual Network Usage Statistics

– Optimized Default Setting for Game, Browser, and Streaming Modes

– User Customized Priority Control

– Supports Wake-On-LAN

– Supports Lightning/ESD Protection

– Supports Energy Efficient Ethernet 802.3az

– Supports PXE

– 2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)*

AMD Ryzen series APUs (Cezanne and Renoir)

– 2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)*

AMD Ryzen series APUs (Picasso)

– 2 x PCI Express x16 Slots (PCIE1: Gen3x8 mode; PCIE3: Gen3 x4 mode)*

– 1 x PCI Express 3.0 x1 Slot

– Supports AMD Quad CrossFireX™ and CrossFireX™

– 15µ Gold Contact in VGA PCIe Slot (PCIE1)

– 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module

*Supports NVMe SSD as boot disks

– 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)****

– 4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)*****

– 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)

– 1 x Front Panel Audio Connector

– 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)

– 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports) (Supports ESD Protection)

*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.

****The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

*****The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin fan is in use

– 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 (10 Gb/s) (Supports ESD Protection)

– 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection)

– 4 x USB 3.2 Gen1 Ports (ASMedia ASM1074 hub) (Supports ESD Protection)

– 2 x USB 2.0 Ports (Supports ESD Protection)

– 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)

– 1 x Clear CMOS Button

– HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)

– 2oz Copper PCB

– 1 x Hyper M.2 Socket (M2_1), supports M Key type 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 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)**

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

**Supports NVMe SSD as boot disks