ASRock X870 Steel Legend WIFI ATX Motherboard
MPN X870-STEEL-LEGEND-WIFI · Brand ASROCK · ATX
The ASRock X870 Steel Legend WIFI is an ATX motherboard for AMD AM5 CPUs (Ryzen 9000/8000/7000) featuring Wi-Fi 7, dual USB4 Type-C ports, PCIe 5.0 storage, and DDR5 support up to 8,000+ MT/s
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Overview
The ASRock X870 Steel Legend WIFI is a full-size ATX motherboard built on AMD's X870 chipset for the AM5 socket. It is designed to support AMD Ryzen 9000, Ryzen 8000, and Ryzen 7000 series processors, making it a forward-compatible foundation for mainstream enthusiast builds. At the heart of the power delivery system is a 14+2+1 phase design using 80A Dr.MOS components for VCore and SOC rails. ASRock pairs this with proprietary 20K Black capacitors rated at 20,000 hours with a capacitance of 1,000µF per unit — an upgrade over standard 560µF capacitors — intended to reduce voltage ripple and deliver more stable output current under demanding workloads. The PCB itself uses an 8-layer construction to support cleaner signal routing and improved power delivery efficiency. Memory support spans four DDR5 DIMM slots in dual-channel configuration, capable of reaching speeds up to 8,000 MT/s and beyond with overclocking. Both Intel XMP and AMD EXPO profiles are supported, along with ECC and non-ECC unbuffered DDR5 modules. Maximum addressable RAM is 256 GB. Storage connectivity is a highlight: a single Blazing M.2 slot runs at PCIe Gen 5 x4 speeds, while two additional Hyper M.2 slots operate at PCIe Gen 4 x4. Four SATA3 ports round out the storage options. For expansion, one PCIe 5.0 x16 slot (CPU-connected) handles the primary GPU, while a second PCIe 4.0 x16 slot (chipset, running x4) adds flexibility. AMD CrossFire multi-GPU configurations are supported. Connectivity is extensive. Networking includes a Realtek 2.5G wired LAN port alongside 802.11be Wi-Fi 7 and Bluetooth 5.4 wireless. The rear I/O panel provides two USB4 Type-C ports running at 40 Gb/s, two USB 3.2 Gen2 Type-A ports at 10 Gb/s, three USB 3.2 Gen1 Type-A ports, and four USB 2.0 ports, supplemented by HDMI video output and an optical S/PDIF audio out. Internally, the board adds a USB 3.2 Gen2x2 Type-C front-panel header at 20 Gb/s and headers for an additional eight USB ports (Gen1 and USB 2.0). Audio is handled by a Realtek ALC4082 7.1-channel HD codec enhanced with Nahimic Audio software. Fan and pump control is managed through two 4-pin CPU fan headers, three 4-pin chassis fan headers, and one 4-pin AIO pump header, all with Smart Fan Speed Control. RGB and addressable LED support is provided via one RGB header and three ARGB headers. A BIOS Flashback button on the rear I/O panel enables firmware updates without a CPU or RAM installed. Verifiable Specifications: • Socket: AM5 | Chipset: AMD X870 | Form Factor: ATX • CPU Support: AMD Ryzen 9000, 8000, 7000 series • Memory: 4× DDR5 DIMM, dual-channel, up to 256 GB, up to 8,000+ MT/s (OC), XMP/EXPO • Power Phases: 14+2+1, 80A Dr.MOS (VCore+SOC) • Storage: 1× M.2 PCIe Gen5 x4, 2× M.2 PCIe Gen4 x4, 4× SATA3 • Expansion: 1× PCIe 5.0 x16 (CPU), 1× PCIe 4.0 x16 (chipset, x4 mode) • Rear USB: 2× USB4 Type-C (40 Gb/s), 2× USB 3.2 Gen2 Type-A, 3× USB 3.2 Gen1 Type-A, 4× USB 2.0 • Front USB: 1× USB 3.2 Gen2x2 Type-C header (20 Gb/s), 4× USB 3.2 Gen1, 4× USB 2.0 • Video Output: 1× HDMI • Audio: Realtek ALC4082 7.1 CH HD, Nahimic Audio, Optical S/PDIF Out • Networking: Realtek 2.5G LAN, Wi-Fi 7 (802.11be), Bluetooth 5.4 • PCB: 8-layer • Warranty: 3 Years
Datasheet
| Memory Type | DDR5 |
|---|---|
| Warranty | 3 Years |
| Form Factor | ATX |
| Chipset | X870 |
| Socket | AM5 |
| CPU Type | Ryzen 9000,Ryzen 8000,Ryzen 7000 |
| Max Memory | 256 GB |
| Memory Speed | up to 8000+ |
| Platform | AMD |
| Graphics Port | 1 x HDMI,2 x USB4 |
| Memory Feature | Supports DDR5 ECC/non-ECC, un-buffered memory Supports Extreme Memory Profile (XMP) and EXTended Profiles for Overclocking (EXPO) memory modules |
| Expansion Slots | 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 – Supports AMD CrossFire™ – 15μ Gold Contact in VGA PCIe Slot (PCIE1) |
| Channel Supported | Dual Channel |
| Wireless Networking | WiFi 7,Bluetooth 5.4 |
| Back Panel I/O Ports | 2 x Antenna Ports 1 x HDMI Port 1 x Optical SPDIF Out Port 2 x USB4 Type-C Ports (40 Gb/s) 3 x USB 3.2 Gen1 Type-A Ports (USB32_12 are Lightning Gaming Ports.) 2 x USB 3.2 Gen2 Type-A Ports (10 Gb/s) (USB32_34 supports Ultra USB Power.) 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) |
| Internal I/O Connector | 1 x Thermistor Cable Header 1 x SPI TPM 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) |




