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ASRock Steel Legend B850M WiFi 7 AM5 mATX Motherboard

Manufacturer: ASROCK
ID: B850M STEEL LEGEND WIFI
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Specifications
Description
Store availability
Delivery
Price development
Manuals
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor socketAM5
Supported processor socketsSocket AM5
Memory
Maximum internal memory256 GB
ECCcheckmark
Non-ECCcheckmark
Supported memory typesDDR5
Memory channelsDual-channel
Unbuffered memorycheckmark
Memory slots typeDIMM
Number of memory slots4
Supported memory clock speed (max)8000 MHz
ECC сompatibilityECC & Non-ECC
Weight & dimensions
Width244 mm
Depth244 mm
Networking
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)
Bluetooth version5.4
Ethernet LANcheckmark
Bluetoothcheckmark
LAN controllerDragon RTL8125BG
Wi-Ficheckmark
Ethernet interface type2.5 Gigabit Ethernet
Top Wi-Fi standardWi-Fi 7 (802.11be)
Internal I/O
USB 2.0 connectors2
CPU fan connectorcheckmark
ATX Power connector (24-pin)checkmark
Number of chassis fan connectors3
Front panel audio connectorcheckmark
TPM connectorcheckmark
EPS power connector (8-pin)checkmark
USB 3.2 Gen 1 (3.1 Gen 1) connectors3
Number of SATA III connectors4
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
Front panel connectorcheckmark
12V power connectorcheckmark
RGB LED pin headercheckmark
Number of RGB LED pin headers1
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)1
Back panel I/O ports
Line-incheckmark
USB connector typeUSB Type-A, USB Type-C
USB 2.0 ports quantity4
Ethernet LAN (RJ-45) ports1
Headphone outputs3
Microphone incheckmark
VGA (D-Sub) ports quantity0
DVI-D ports quantity0
WiFi-AP antenna jack2
HDMI ports quantity1
HDMI version2.1
DisplayPorts quantity1
DisplayPort version1.4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
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 quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Storage controllers
RAID levels0, 1, 10
RAID supportcheckmark
Number of storage drives supported7
Supported storage drive typesHDD & SSD
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
Packaging content
Cables includedSATA
Screws includedcheckmark
Antenna includedcheckmark
M.2 standoff includedcheckmark
Expansion slots
PCI Express x16 slots2
Number of M.2 (M) slots3
PCI Express x16 (Gen 4.x) slots1
PCI Express x4 (Gen 4.x) slots1
PCI Express x16 (Gen 5.x) slots1
1st M.2 largest key size2280
2nd M.2 largest key size2280
3rd M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 highest PCI Express generation4.0
3rd M.2 highest PCI Express generation4.0
BIOS
BIOS memory size256 Mbit
BIOS typeUEFI AMI
Clear CMOS buttoncross
Graphics
Maximum resolution3840 x 2160 pixels
Parallel processing technology supportNot supported
HDCPcheckmark
Features
CertificationFCC, CE, ErP/EuP
Motherboard chipsetAMD B850
Motherboard form factorMicro ATX
Product colourWhite
Audio output channels7.1 channels
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Component forPC
Audio chipRealtek ALC1220
EAN4711581490499
Warranty3 years

The ASRock B850M Steel Legend WiFi is a Micro ATX motherboard built on the AMD B850 chipset for the AM5 socket. It provides native support for AMD Ryzen 7000, 8000, and 9000 Series processors, establishing a foundation for mainstream and performance-oriented systems. The board accommodates up to 256 GB of dual-channel DDR5 memory across four DIMM slots, with supported clock speeds reaching 8000 MHz. Its power design is structured to deliver stable voltage to the CPU and other critical components during demanding operations.

This model is equipped with advanced storage and expansion capabilities, including a primary PCIe 5.0 x16 slot for a graphics card. For storage drives, it features one PCIe 5.0 M.2 slot, two additional M.2 slots, and four SATA3 ports with RAID 0, 1, and 10 support. High-speed connectivity is provided by a 2.5 Gigabit Ethernet port, integrated Wi-Fi 7, and Bluetooth 5.4. The rear I/O includes a comprehensive array of ports, such as USB 3.2 Gen 2 Type-C and Type-A, HDMI 2.1, and DisplayPort 1.4.

Key Features:
  • Socket AM5 for AMD Ryzen 7000/8000/9000 Series processors
  • Features the AMD B850 chipset
  • Micro ATX form factor for compact to mid-size builds
  • Supports up to 256 GB of dual-channel DDR5 memory
  • Provides one PCIe 5.0 M.2 slot, two additional M.2 slots, and four SATA3 ports
  • Includes one PCIe 5.0 x16 slot for graphics cards
  • Integrated 2.5 Gigabit Ethernet, Wi-Fi 7, and Bluetooth 5.4
  • Features a Realtek ALC1220 audio codec
  • Offers rear panel HDMI, DisplayPort, and USB Type-C connectivity
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The above technical details are for reference only and may change without notice. We reserve the right to correct printing errors and use illustrations for guidance. Some text may be auto-generated or machine-translated, which could lead to inaccuracies.

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