ASRock B850 Steel Legend WiFi AMD AM5 Socket Motherboard, ATX, 4x DDR5 Slots, 4x M.2 Sockets, Fitted I/O Shield, 2.5GbE LAN, Wi-Fi 7, 1x HDMI Port

Key Features

• Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
• 14+2+1 Phase Power Design, 80A Dr.MOS for VCore+SOC
• 4 x DDR5 DIMMs
• Supports Dual Channel, up to 8000+ (OC)
• 1 x PCIe 5.0 x16, 1 PCIe 4.0 x16
• Graphics Output Options: 1 x HDMI
• Realtek ALC4082 7.1 CH HD Audio Codec, Nahimic Audio
• 1 x Blazing M.2 (PCIe Gen5x4)
• 3 x Hyper M.2 (PCIe Gen4x4)
• 4 x SATA3
• 1 x USB 3.2 Gen2x2 Type-C (Front)
• 4 x USB 3.2 Gen2 (2 Rear, 2 Rear Type-C)
• 7 x USB 3.2 Gen1 (3 Rear, 4 Front)
• 8 x USB 2.0 (4 Rear, 4 Front)
• Realtek 2.5G LAN
• 802.11be Wi-Fi 7 + Bluetooth
• Supports Lite Release Design,
• Toolless Multi-Layer M.2 Heatsink,
• M.2 Bottom Heatsink

14+2+1 Power Phase Design

VCore with Dr.MOS design, delivering smoother and neater power to the CPU.

Exclusive 20K Cap with 1000uF Capacitance

Featuring ASRock's exclusive 1000uF capacitor ith 20,000 hrs lifespan, ensuring stable and ultimate performance.

Lite Release Design

Equipped with an enlarged latch for easy pressing, simplifying both the installation and removal of graphics cards.

Toolless Multi-Layer M.2 Heatsink

Including a quick-release mechanism heatsink for effortless and toolless M.2 SSD installation.

Wi-Fi 7 802.11be

Latest WiFi 7 technology delivers extreme wireless internet speeds and low latency.

M.2 Bottom Heatsink

Dissipate heat efficiently through the motherboard PCB, maximize performance while maintaining system stability.

Specification

Platform

ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm

8 Layer PCB

Unique Feature

• Superb Productivity
• PCIe Gen5 (Graphics, M.2)
• Dual Channel DDR5
• Rock-Solid Durability
• 14+2+1 Power Phase, 80A Dr.MOS for VCore+SOC+MISC with Enlarged Heatsink Armor
• Flexible Integrated I/O Shield
• 20K Long-lasting Black Caps (high quality and conductive polymer capacitors)
• Ultrafast Connectivity
• 2.5G LAN, 802.11be Wi-Fi 7 Module
• ASRock Lightning Gaming Ports
• EZ Update
• BIOS Flashback Button
• ASRock Auto Driver Installer
• EZ Troubleshooter
• ASRock Post Status Checker

CPU

Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors

AMD B850

Memory

• Dual Channel DDR5 Memory Technology
• 4 x DDR5 DIMM Slots
• Supports DDR5 ECC/non-ECC, un-buffered memory up to 8000+(OC)
• Max. capacity of system memory: 256GB
• Supports Extreme Memory Profile (XMP) and EXTended Profiles for Overclocking (EXPO) memory modules

Expansion Slot

CPU

• 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode
• Chipset:
• 1 x PCIe 4.0 x16 Slot (PCIE2), supports x4 mode
• 1 x Vertical M.2 Socket (Key E), supports type 2230 WiFi/BT PCIe WiFi module

PCIE1 will run at Gen5x16 with 9000 and 7000 series processors, Gen4x8 with 8000 (Phoenix 1) series processors and Gen4x4 with 8000 (Phoenix 2) series processors.

• If M2_4 is occupied, PCIE2 will be disabled.
• Supports NVMe SSD as boot disks
• 15µ Gold Contact in VGA PCIe Slot (PCIE1)

Graphics

Integrated AMD RDNA graphics (Actual support may vary by CPU)

1 x HDMI 2.1 TMDS/FRL 8G Compatible, supports HDR, HDCP 2.3 and max. resolution up to 4K 120Hz

Audio

• 7.1 CH HD Audio with Content Protection (Realtek ALC4082 Audio Codec)
• Individual PCB Layers for R/L Audio Channel
• Direct Drive Technology on Front headphone port (Supports up to 600 Ohm headsets)
• 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

Wireless LAN

• 802.11be 2x2 Wi-Fi 7 Module
• Supports IEEE 802.11a/b/g/n/ac/ax/axe/be
• Supports 2.4GHz/5GHz/6GHz frequency band

Supports 160MHz channel bandwidth with 6GHz frequency band

Wi-Fi 7 (6GHz band) will be supported by Microsoft Windows 11. The availability will depend on the different regulation status of each country and region. It will be activated (for supported countries) through Windows Update and software updates once available.

• 1 antenna to support 2 (Transmit) x 2 (Receive) diversity technology
• Supports Bluetooth 5.4
• Supports MU-MIMO

USB

CPU

• 2 x USB 3.2 Gen2 Type-C (Rear)
• 1 x USB 3.2 Gen2 Type-A (Rear (USB32_3))
• 1 x USB 3.2 Gen1 Type-A (Rear (USB32_1))
• Chipset:
• 1 x USB 3.2 Gen2x2 Type-C (Front)
• 1 x USB 3.2 Gen2 Type-A (Rear (USB32_4))
• 6 x USB 3.2 Gen1 Type-A (2 Rear (USB32_2 and USB32_5), 4 Front)
• 8 x USB 2.0 (4 Rear, 4 Front)
• All USB ports support ESD Protection

Rear Panel I/O

• 2 x Antenna Ports
• 1 x HDMI Port
• 1 x Optical SPDIF Out Port
• 2 x USB 3.2 Gen2 Type-C Ports (10 Gb/s)
• 3 x USB 3.2 Gen1 Type-A Ports
• 2 x USB 3.2 Gen2 Type-A Ports (10 Gb/s)
• 4 x USB 2.0 Ports
• 1 x RJ-45 LAN Port
• 1 x BIOS Flashback Button
• 1 x Line Out Jack (Gold Audio Jack)
• 1 x Microphone Input Jack (Gold Audio Jack)
• USB32_12 are Lightning Gaming Ports.
• USB32_34 supports Ultra USB Power.

Storage

CPU

• 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode
• 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2260/2280 PCIe Gen4x4 (64 Gb/s) mode
• Chipset:
• 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2230/2260/2280 PCIe Gen4x4 (64 Gb/s) mode
• 1 x Hyper M.2 Socket (M2_4, Key M), supports type 2260/2280 PCIe Gen4x4 (64 Gb/s) mode
• ASMedia ASM1061:
• 4 x SATA3 6.0 Gb/s Connectors
• Supports NVMe SSD as boot disks
• M2_1 is the first priority for M.2 installation.

M2_1 will run at Gen5x4 with 9000 and 7000 series processors and Gen4x4 with 8000 (Phoenix 1 and Phoenix 2) series processors.

M2_2 will run at Gen4x4 with 9000 and 7000 series processors, Gen4x4 with 8000

(Phoenix 1) series processors and Gen4x2 with 8000 (Phoenix 2) series processors.

If M2_4 is occupied, PCIE2 will be disabled

RAID

Supports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices

Connector

• 1 x SPI TPM Header
• 1 x Thermistor Cable Header
• 1 x Power LED and Speaker Header
• 1 x RGB LED Header
• 3 x Addressable LED Headers
• 2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)
• 3 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)
• 1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)
• 1 x 24 pin ATX Power Connector (Hi-Density Power Connector)
• 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
• 1 x Front Panel Audio Connector
• 2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
• 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
• 1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
• Supports in total up to 12V/3A, 36W LED Strip
• Support in total up to 5V/3A, 15W LED Strip
• CPU_FAN1 supports the fan power up to 1A (12W).

CPU_FAN2, CHA_FAN1~3 and AIO_PUMP support the fan power up to 3A (36W).

CPU_FAN2, CHA_FAN1~3 and AIO_PUMP can auto detect if 3-pin or 4-pin fan is in use.

BIOS Feature

256Mb AMI UEFI Legal BIOS with GUI support

Software and UEFI

• Software
• ASRock Motherboard Utility (A-Tuning)
• ASRock Dragon 2.5G LAN Software
• ASRock Polychrome SYNC

UEFI

• ASRock EZ Mode
• ASRock Full HD UEFI
• ASRock Auto Driver Installer
• ASRock Instant Flash

OS

Microsoft Windows 10 64-bit / 11 64-bit

Certifications

FCC, CE

ErP/EuP ready (ErP/EuP ready power supply is required)

Accessories

• 2 x SATA Data Cables
• 2 x ASRock WiFi 2.4/5/6 GHz Antennas
• 1 x Thermistor Cable