ASRock B550M Steel Legend m-ATX Gaming Motherboard

ASRock B550M Steel Legend m-ATX Gaming Motherboard (AMD Socket AM4, AMD B550 Chipset, 3rd Gen Ryzen Series CPU, Max 128GB DDR4 4733 MHz Memory)
FEATURES :
Supports AMD AM4 Socket Ryzen 3000, 4000 G-Series, and 5000 Series Desktop Processors
10 Power Phase Design, Dr. MOS
Supports DDR4 4733+ (OC)
1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi
Graphics Output Options: HDMI, DisplayPort
AMD CrossFireX
7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear)
Dragon 2.5G LAN
Steel Forever :
Get Endless Performance Possibilities with Steel Style.

Nahimic Audio :
Whether you are using headphones, a headset, external or internal speakers, via USB, Wi-Fi, analog output, or even HDMI, Nahimic Audio offers you the most engaging listening experience, vibrant with details.

Hi-Density Power Connector :
Reduces 23% power loss and decreases the temperature of the connector by 22 degrees Celsius.
8+4 12V Power Connectors
24-pin ATX Power Connector

2oz Copper PCB :
2-ounce copper inner layers that provide stable signal traces and power shapes! Delivering lower temperature and higher energy efficiency for overclocking, it’s able to support the latest DDR4 memory modules with the most extreme memory performance!

Polychrome RGB :
ASRock motherboards deliver stunning performance and superior aesthetics to rule your 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.

Recommended reading:Gigabyte B450 Gaming X Motherboard

Dragon 2.5 Gb/s LAN :
The intelligent 2.5Gb/s LAN platform is built for maximum networking performance for the demanding requirements of home networking, content creators, online gamers, and high-quality streaming media. Boost networking performance up to 2.5X the bandwidth compared to the standard gigabit Ethernet, you’ll enjoy the faster and uncompromised connectivity experience for gaming, file transfers, and backups.

A Solid M.2-Solution Performer :
Ready for higher capacity and even faster Type 22110 M.2 NVMe SSD to fulfill the need of performance. Hyper M.2 socket that supports PCIe Gen4 x4 while M.2 socket is capable of running PCIe Gen3 x2 and SATA3 mode.

AMD Smart Access Memory :
Conventional PC systems processors can only access a fraction of graphics memory and limits system performance. With AMD Smart Access Memory, the data channel gets expanded to harness the full potential of GPU memory, remove the bottleneck and increase performance.

Dual USB 3.2 Gen2 (Type-A + Type-C) :
This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen2 ports built on the rear i/o for supporting next-generation USB 3.2 Gen2 devices and to deliver up to 10 Gbps data transfer rates.

M.2 (KEY E) For WiFi :
Besides the onboard LAN port, users may also choose 802.11ac wireless connections by M.2 (Key E) slot.

Recommended reading:Asrock H270 Pro4 ATX Motherboard

Flexible Integrated I/O Shield :
Unlike most so-called pre-mounted I/O shield that is only decorated with fancy color schemes. We reserve more tolerance space and allow the IO shield is adjustable when installing, thus fitting the chassis perfectly without any mechanical issue.

Dual Graphics Outputs :
Complete with two types of most used connectors! Packed with an HDMI + DisplayPort combo, you have more graphics output options now.

Gold Audio Jacks :
Everything will wear off in time, but gold looks better! Gold audio jack provides stable sound transmission!

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.

TECHNICAL SPECIFICATIONS :
Unique Feature
ASRock USB 3.2 Gen2 :

Recommended reading:Gigabyte B450 Aorus M Gaming Motherboard

ASRock USB 3.2 Gen2 Type-A Port (10 Gb/s)
ASRock USB 3.2 Gen2 Type-C Port (10 Gb/s)
ASRock Super Alloy :

XXL Aluminum Alloy Heatsink
Premium 60A Power Choke
50A Dr.MOS
Nichicon 12K Black Caps (100% Japan-made high-quality conductive polymer capacitors)
I/O Armor
Matte Black PCB
High-Density Glass Fabric PCB
2oz Copper PCB
2.5G LAN
ASRock Steel Slot Gen4
ASRock Full Coverage M.2 Heatsink
ASRock Hyper M.2 (PCIe Gen4x4)
ASRock POST Status Checker (PSC)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update & APP Shop

CPU

Supports AMD AM4 Socket Ryzen 3000, 4000 G-Series, and 5000 Series Desktop Processors*
Digi Power design
10 Power Phase design
*Not compatible with AMD Ryzen 5 3400G and Ryzen 3 3200G.

Chipset

Recommended reading:Gigabyte B360M DS3H Motherboard

AMD B550
Memory

Dual-Channel DDR4 Memory Technology
4 x DDR4 DIMM Slots
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 (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
Max. the capacity of system memory: 128GB*
Supports Extreme Memory Profile (XMP) memory modules
15μ Gold Contact in DIMM Slots
*Due to the operating system limitation, the actual memory size may be less than 4GB for reservation system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.

BIOS

256Mb AMI UEFI Legal BIOS with GUI support
Supports “Plug and Play”
ACPI 5.1 compliance wake up events
Supports jumperfree
SMBIOS 2.3 support
CPU, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, 2.5V_PROM, +1.8VSB, VDDP Voltage Multi-adjustment
Graphics

Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU*
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.

Recommended reading:Asrock Z690 Extreme WiFi 6E DDR4 Intel Z690 Chipset Motherboard

Audio

7.1 CH HD Audio with Content Protection (Realtek ALC1200 Audio Codec)
Premium Blu-ray Audio support
Supports Surge Protection
PCB Isolate Shielding
Individual PCB Layers for R/L Audio Channel
Gold Audio Jacks
Nahimic Audio
LAN

2.5 Gigabit LAN 10/100/1000/2500 Mb/s
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
Slots
AMD Ryzen series CPUs (Matisse) :

2 x PCI Express x16 Slots (PCIE1 : Gen4x16 mode; PCIE3 : Gen3 x4 mode)*
AMD Ryzen series APUs (Renoir) :

2 x PCI Express x16 Slots (PCIE1 : Gen3x16 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 module
*Supports NVMe SSD as boot disks

Storage

6 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI, and Hot Plug*
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 Matisse) or Gen3x4 (32 Gb/s) (with Renoir)**
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 support ASRock U.2 Kit

Connector

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)****
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 a 3-pin or 4-pin fan is in use.

Rear Panel I/O

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 (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)
Software and UEFI
Software :

ASRock Motherboard Utility (A-Tuning)
ASRock Polychrome SYNC*
UEFI :

ASRock Full HD UEFI
ASRock Instant Flash
Support CD

Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
Accessories

Quick Installation Guide, Support CD
2 x SATA Data Cables
2 x Screws for M.2 Sockets
Hardware Monitor

Temperature Sensing: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Quiet Fan (Auto adjust the chassis fan speed by CPU temperature): CPU, CPU/Water Pump, Chassis/Water Pump Fans
Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/Water Pump Fans
Voltage monitoring : +12V, +5V, +3.3V, CPU Vcore, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, +1.8V, VDDP
Form Factor

Micro ATX Form Factor : 9.6-in x 9.6-in, 24.4 cm x 24.4 cm
2oz Copper PCB
OS

Microsoft Windows 10 64-bit
Certifications

FCC, CE- ErP/EuP ready (ErP/EuP ready power supply is required)