ASRock B850M Steel Legend WiFi AMD Ryzen AM5 DDR5 mATX Motherboard - 90-MXBS2-A0UAYZ

Detail Specication Detail Specication

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

* Please refer to Memory Support List on ASRock's website for more information.

(http://www.asrock.com/)

Memory

CPU:

- 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*

- 1 x PCIe 4.0 x4 Slot (PCIE2), supports x4 mode*

Chipset:

- 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.

* Supports NVMe SSD as boot disks

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

Expansion Slot

Integrated AMD RDNATM 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

- 1 x DisplayPort 1.4 with DSC (compressed), supports HDCP 2.3 and

max. resolution up to 4K 120Hz

Graphics

7.1 CH HD Audio with Content Protection (Realtek ALC1220 Audio Codec)

- Impedance Sensing on Rear Out port

- Individual PCB Layers for R/L Audio Channel

- Nahimic Audio

Audio

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

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

* The Wi-Fi 7 module is supported by Microsoft® Windows® 11 only. There is no

driver available for Windows® 10. The availability of the 6GHz band 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

Wireless LAN

CPU:

- 1 x USB 3.2 Gen2 Type-C (Rear)

- 1 x USB 3.2 Gen2 Type-A (Rear)

- 1 x USB 3.2 Gen1 Type-A (Rear (USB32_2))

Chipset:

- 1 x USB 3.2 Gen1 Type-C (Front)

- 5 x USB 3.2 Gen1 Type-A (1 Rear (USB32_3), 4 Front)

- 8 x USB 2.0 (4 Rear, 4 Front)

* All USB ports support ESD Protection

USB

2 x Antenna Ports

- 1 x HDMI Port

- 1 x DisplayPort 1.4

- 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)

- 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)

- 2 x USB 3.2 Gen1 Ports*

- 4 x USB 2.0 Ports

- 1 x RJ-45 LAN Port

- 1 x BIOS Flashback Button

- HD Audio Jacks: Line in / Front Speaker / Microphone

* USB32_23 are Lightning Gaming Ports.

Rear Panel I/O

CPU:

- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode*

Chipset:

- 1 x M.2 Socket (M2_2, Key M), supports type 2260/2280 PCIe Gen4x2 (32 Gb/s) mode*

- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2260/2280 PCIe Gen4x4 (64 Gb/s) mode*

- 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, Gen4x4 with 8000 (Phoenix 1)

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

Storage

Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices

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

* Requires additional M.2 NVMe expansion cards to support RAID 10

RAID

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 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)

- 2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)

- 1 x Front Panel Type C USB 3.2 Gen1 Header

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

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

Connector

BIOS Feature - 256Mb AMI UEFI Legal BIOS with GUI support

Software

- ASRock Motherboard Utility (A-Tuning)

- ASRock Dragon 2.5G LAN Software

- ASRock Polychrome SYNC

* These utilities can be downloaded from ASRock Live Update & APP Shop.

UEFI

- ASRock EZ Mode

- ASRock Full HD UEFI

- ASRock Auto Driver Installer

- ASRock Instant Flash

Software and UEFI

Microsoft® Windows® OS 10 64-bit / 11 64-bit

FCC, CE

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

Certifications

2 x SATA Data Cables

- 2 x ASRock WiFi 2.4/5/6 GHz Antennas

- 1 x Thermistor Cable

- 2 x Screws for M.2 Sockets

- 1 x Standoff for M.2 Socket