Asrock 90-MXBCU0-A0UAYZ B550M Steel Legend Amd B550 90-MXBCU0-A0UAYZ

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.

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 and rich with details.

The Sound Tracker is a visual indicator that points out the directions from which predominant sounds are coming. Each sound is properly positioned in 360� on a radar for a full immersion during the game.

Dr. MOS
Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.

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.

Hi-Density Power Connector
Reduces 23% power loss and decreases the connector�s temperature 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 most extreme memory performance!

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.

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.

Automatically detects and accelerates game traffic ahead of other network traffic for smoother, stutter-free in-game performance and the competitive edge.

A SOLID M.2-SOLUTION PERFORMER
Dual M.2 For SSD, Supports Type 22110 M.2
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.

BIOS



ACPI version



5.1


BIOS memory size



256 Mbit


BIOS type



UEFI AMI


Clear CMOS button



Yes


Plug and Play



Yes


System Management BIOS (SMBIOS) version



2.3


Expansion slots



Number of M.2 (M) slots



2


PCI Express x1 (Gen 3.x) slots



1


PCI Express x16 (Gen 3.x) slots



1


PCI Express x16 (Gen 4.x) slots



1


Features



Audio chip



Realtek ALC1200


Audio output channels



7.1 channels


Component for



PC


Motherboard chipset



AMD B550


Motherboard chipset family



AMD


Motherboard form factor



micro ATX


PC health monitoring



CPU, Fan, Temperature, Voltage, Water cooling


Power source type



ATX


Windows operating systems supported



Windows 10 x64, Windows 11 x64


Graphics



HDCP



Yes


Maximum resolution



5120 x 2880 Pixels


Number of displays supported



2


Parallel processing technology support



CrossFireX, Quad-GPU CrossFireX


Internal I/O



12V power connector



Yes


ATX Power connector (24-pin)



Yes


CPU fan connector



Yes


EPS power connector (8-pin)



Yes


Front panel audio connector



Yes


Front panel connector



Yes


Number of chassis fan connectors



4


Number of SATA III connectors



6


Peripheral (Molex) power connectors (4-pin)



2


RGB LED pin header



Yes


TPM connector



Yes


USB 2.0 connectors



2


USB 3.2 Gen 1 (3.1 Gen 1) connectors



2


Logistics data



Harmonized System (HS) code



84733020


Memory



ECC



Yes


Maximum internal memory



128 GB


Memory slots type



DIMM


Non-ECC



Yes


Number of memory slots



4


Supported memory clock speed (max)



4533 MHz


Supported memory clock speeds



2133, 2400, 2667, 2933, 3200, 3333, 3466, 3600, 3733, 3800, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4533


Supported memory module capacities



4GB, 8GB, 16GB, 32GB


Supported memory types



DDR4-SDRAM


Unbuffered memory



Yes


Network



Ethernet interface type



2.5 Gigabit Ethernet


Ethernet LAN



Yes


LAN controller



Dragon RTL8125BG


Wake-on-LAN ready



Yes


Wi-Fi



No


Other features



Number of M.2 (E) slots



1


Quick installation guide



Yes


Weight



465 g


Package dimensions



Gross Weight (Package, kg)



1.3 kg


Packaging content



Cables included



SATA


Drivers included



Yes


Processor



Compatible processor series



3rd Generation AMD Ryzen� 3, 3rd Generation AMD Ryzen 5, 3rd Generation AMD Ryzen� 7, 3rd Generation AMD Ryzen� 9


Maximum number of SMP processors



1


Processor manufacturer



AMD


Processor socket



Socket AM4


Supported processor sockets



Socket AM4


Product dimensions



Net Weight (Product, kg)



1 kg


Product Depth



24.4 cm


Product Height



7 cm


Product Width



24.4 cm


Rear panel I/O ports



DisplayPort version



1.4


DisplayPorts quantity



1


Ethernet LAN (RJ-45) ports



1


HDMI ports quantity



1


Microphone in



Yes


PS/2 ports quantity



1


S/PDIF out port



Yes


USB 2.0 ports quantity



2


USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity



4


USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity



1


USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity



1


WiFi-AP antenna jack



2


Storage controllers



RAID levels



0, 1, 10


RAID support



Yes


Supported storage drive interfaces



M.2, SATA III


Supported storage drive types



HDD & SSD


Vendor information



Brand Name


Asrock


Warranty



1 Year(s)