ASRock B850I Lightning WiFi Phantom Gaming Mini-ITX Motherboard

The ASRock B850I Lightning WiFi delivers high-performance computing in a compact Mini-ITX form factor. Built for AMD Ryzen 9000, 8000, and 7000 series processors on the AM5 socket, this motherboard combines cutting-edge connectivity with robust power delivery for gaming and productivity builds.

Power Delivery and Performance

Featuring a 10+1+1 phase power design with 110A SPS for VCore, this motherboard ensures stable power delivery to your processor. The enlarged heatsink armor keeps components cool during intensive workloads. Dual-channel DDR5 memory support reaches speeds up to 8200+ MHz (OC) across two DIMM slots, accommodating up to 128GB total capacity with XMP and EXPO profile support.

Next-Generation Storage and Expansion

The B850I Lightning WiFi includes one Blazing M.2 socket supporting PCIe Gen5 x4 speeds (128 Gb/s) and one Hyper M.2 socket with PCIe Gen4 x4 support (64 Gb/s). The primary PCIe 5.0 x16 slot delivers maximum bandwidth for modern graphics cards. Two SATA3 ports provide additional storage options with RAID 0, 1, and 10 support across M.2 and SATA devices.

Premium Connectivity Features

Killer E3100G 2.5 Gigabit Ethernet with prioritization engine optimizes network traffic for gaming and streaming. The integrated WiFi 6E module (802.11axe) supports dual-band 2x2 with extended 6GHz band access and Bluetooth 5.2. USB connectivity includes USB 3.2 Gen2 Type-C with DP 1.4 Alt Mode for single-cable display output, two USB 3.2 Gen2 Type-A ports, and Lightning Gaming Ports for reduced latency with high-speed peripherals.

Audio and Display Options

The Realtek ALC1220 7.1 CH HD audio codec with Nahimic Audio enhancement delivers premium sound quality with individual PCB layers for left and right channels. Display outputs include HDMI 2.1 supporting 4K 120Hz with HDR and HDCP 2.3, plus USB Type-C with DisplayPort 1.4 capability reaching 4K 60Hz.

Practical Design Elements

The integrated flexible I/O shield simplifies installation, while the BIOS Flashback button enables firmware updates without CPU or memory installed. Three fan headers with smart speed control support CPU, chassis, and AIO pump configurations. Two addressable LED headers and Polychrome SYNC software enable RGB customization. The 8-layer PCB construction ensures signal integrity in the compact 6.7-inch square footprint.

ASRock Phantom Gaming B850I Lightning WiFi

Key Features
Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
10+1+1 Phase Power Design, 110A SPS for VCore
2 x DDR5 DIMMs Supports Dual Channel, up to 8200+ (OC)
1 x PCIe 5.0 x16
Graphics Output Options: 1 x HDMI, 1 x USB Type-C (DP-Alt)
Realtek ALC1220 7.1 CH Audio Codec, Nahimic Audio
1 x Blazing M.2 (PCIe Gen5x4)
1 x Hyper M.2 (PCIe Gen4x4)
2 x SATA3
1 x USB 3.2 Gen2 Type-C (Rear)
2 x USB 3.2 Gen2 Type-A (Rear)
1 x USB 3.2 Gen1 Type-C (Front)
3 x USB 3.2 Gen1 (1 Rear, 2 Front)
6 x USB 2.0 (4 Rear, 2 Front)
Killer 2.5G LAN
802.11axe WiFi 6E +Bluetooth
Supports BIOS Flashback

10+1+1 Power Phase
Vcore with SPS design, delivering smoother and neater power to the CPU.

Blazing M.2 (PCIe Gen5 x4)
Supports up to 2 x NVMe M.2 SSDs and one of which is able to accommodates the latest PCI Express 5.0 standard.

WiFi 6E (802.11axe)
Better and faster internet traffic with lower latency!

USB Type-C (DP-Alt Mode)
USB Alternate Mode allows USB Type-C ports to enable both data transfer and display output to DisplayPort monitors through a single cable.

Killer Ethernet E3100
Killer E3100 2.5 Gbps supports prioritization engine, ensuring top-tier networking for gaming and multimedia.

Lightning Gaming Ports
Allows user to connect high speed mice/keyboard for lower jitter and latency!

Specification

Platform
Mini-ITX Form Factor: 6.7-in x 6.7-in, 17.0 cm x 17.0 cm
8 Layer PCB

Unique Feature
Superb Productivity
PCIe Gen5 (Graphics, M.2)
Dual Channel DDR5
Rock-Solid Durability
10+1+1 Power Phase, 110A SPS for VCore with Enlarged Heatsink Armor
Flexible Integrated I/O Shield
Ultrafast Gaming
Killer 2.5G LAN, 802.11axe Wi-Fi 6E Module
ASRock Lightning Gaming Ports
EZ Update
BIOS Flashback Button
ASRock Auto Driver Installer

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

Chipset
AMD B850

Memory
Dual Channel DDR5 Memory Technology
2 x DDR5 DIMM Slots
Supports DDR5 ECC/non-ECC, un-buffered memory up to 8200+(OC)
Max. capacity of system memory: 128GB
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 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

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
1 x USB 3.2 Gen2 Type-C, supports DP 1.4 HBR3 and max. resolution up to 4K 60Hz (DP-alt mode supports DP1.4a)

Audio
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

LAN
2.5 Gigabit LAN 10/100/1000/2500 Mb/s
Killer E3100G
Supports Killer LAN Software

Wireless LAN
802.11axe Wi-Fi 6E Module
Supports IEEE 802.11a/b/g/n/ac/ax/axe
Supports Dual-Band 2x2 with extended 6GHz band support
Wi-Fi 6E (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.
A 6GHz compatible router is required for 6E functionality.
2 x antennas to support 2 x (Transmit) x 2 (Receive) diversity technology
Supports Bluetooth 5.2
Supports MU-MIMO

USB
CPU:
1 x USB 3.2 Gen2 Type-C (Rear)
2 x USB 3.2 Gen2 Type-A (Rear)
Chipset:
1 x USB 3.2 Gen1 Type-C (Front)
3 x USB 3.2 Gen1 Type-A (1 Rear, 2 Front)
6 x USB 2.0 (4 Rear, 2 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-A Ports (10 Gb/s)
1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (DP-alt mode supports DP1.4a.)
1 x USB 3.2 Gen1 Port
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_23 are Lightning Gaming Ports.
USB32_TC1 supports a maximum speed of 40 Gb/s as a USB4 port with the 8000 (Phoenix 1 and Phoenix 2) series processors.

Storage
CPU:
1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode
Chipset:
1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode
2 x SATA3 6.0 Gb/s Connectors
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.
Supports NVMe SSD as boot disks

RAID
Supports RAID 0 and RAID 1 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

Connector
1 x Thermistor Cable Header
2 x Addressable LED Headers
1 x CPU Fan Connector (4-pin) (Smart Fan Speed Control)
1 x Chassis Fan Connector (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
1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
1 x Front Panel Audio Connector
1 x USB 2.0 Header (Supports 2 USB 2.0 ports)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header
Support in total up to 5V/3A, 15W LED Strip
CPU_FAN1, CHA_FAN1 and AIO_PUMP support the fan power up to 3A (36W).
CPU_FAN1, CHA_FAN1 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 (Phantom Gaming Tuning)
Killer Control Center
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
2 x Screws for M.2 Sockets
1 x Thermistor Cable

• Socket: AM5
• CPU Compatibility: AMD Ryzen 9000/8000/7000
• Chipset: AMD B850
• Form Factor: Mini ITX
• Memory Slots: DDR5 - 2 Slots
• M.2 Compatibility: PCIe 5 / PCIe 4
• USB C: Yes