Asrock B850 Steel Legend WiFi AMD B850 Socket AM5 ATX

SKU
90-MXBQS0-A0UAYZ
£174.24 £145.20
In Stock
ATX, Socket AM5, AMD B850 chipset, 4 x DDR5 DIMM, 7.1 ch audio, 2.5 Gigabit LAN, Wi-Fi 7, Bluetooth 5.4, AMI UEFI BIOS
More Information
SKU 90-MXBQS0-A0UAYZ
EAN 4711581490062
Manufacturer Asrock
Availability In Stock
Product Manuals (HTML) View Manual
Internal I/O
Number of M.2 (M) slots4
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
12V power connectorYes
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
TPM connectorYes
Number of SATA III connectors4
Number of chassis fan connectors3
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
USB 3.2 Gen 2x2 connectors1
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)2
Number of RGB LED pin headers1
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
Parallel processing technology supportNot supported
HDMI version2.1
Motherboard form factorATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
RAID levels0, 1, 10
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factorATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Processor socketSocket AM5
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Maximum internal memory256 GB
Unbuffered memoryYes
ECC сompatibilityECC & Non-ECC
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
RAID levels0, 1, 10
Number of storage drives supported8
RAID supportYes
Graphics
Parallel processing technology supportNot supported
Maximum resolution3840 x 2160 pixels
HDCPYes
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity3
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity2
USB connector typeUSB Type-A, USB Type-C
USB 2.0 ports quantity4
WiFi-AP antenna jack2
VGA (D-Sub) ports quantity0
S/PDIF out portYes
Microphone inYes
Headphone outputs2
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DVI-D ports quantity0
Line-inYes
Network
Ethernet LANYes
Wi-FiYes
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
LAN controllerDragon RTL8125BG
Ethernet interface type2.5 Gigabit Ethernet
BluetoothYes
Bluetooth version5.4
Top Wi-Fi standardWi-Fi 7 (802.11be)
Features
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factorATX
Component forPC
Audio chipRealtek ALC4082
Product colourWhite
Expansion slots
Number of M.2 (M) slots4
PCI Express x16 (Gen 4.x) slots1
PCI Express x16 (Gen 5.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation4.0
4th M.2 largest key size2280
4th M.2 highest PCI Express generation4.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Video
Maximum resolution3840 x 2160 pixels
HDCPYes
Certificates
CertificationFCC, CE, ErP/EuP
Software
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Weight & dimensions
Width305 mm
Depth244 mm
Packaging content
Cables includedSATA
Antenna includedYes
  • Supports AMD Socket AM5 RyzenTM 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 PCIe 5.0 x16, 1 PCIe 4.0 x16
  • Graphics Output Options: 1 HDMI
  • Realtek ALC4082 7.1 CH HD Audio Codec, Nahimic Audio
  • 1 Blazing M.2 (PCIe Gen5x4), 3 Hyper M.2 (PCIe Gen4x4), 4 SATA3
  • 1 USB 3.2 Gen2x2 Type-C (Front), 4 USB 3.2 Gen2 (2 Rear, 2 Rear Type-C), 7 USB 3.2 Gen1 (3 Rear, 4 Front), 8 USB 2.0 (4 Rear, 4 Front)
  • Realtek 2.5G LAN
  • 802.11be Wi-Fi 7 + Bluetooth

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SKU
90-MXBQS0-A0UAYZ
90MB14S0-M0EAY0
90MB19V0-M0EAY0
PRO Z790-P WIFI
90MB1BF0-M0EAY0
90MB1BZ0-M0EAY0
Manufacturer
Asrock
ASUS
ASUS
MSI
ASUS
ASUS
Processor manufacturer
N/A
AMD
AMD
Intel
AMD
AMD
Motherboard form factor
N/A
ATX
ATX
ATX
micro ATX
ATX
Processor socket
N/A
Socket AM4
Socket AM4
LGA 1700
Socket AM5
Socket AM5
Supported memory types
N/A
DDR4-SDRAM
DDR4-SDRAM
DDR5-SDRAM
DDR5-SDRAM
DDR5-SDRAM
Number of memory slots
N/A
4 to 6
4 to 6
4 to 6
4 to 6
4 to 6
Component for
N/A
PC
PC
PC
PC
PC