ASRock Phantom Gaming B850I Lightning WiFi
Mini-ITX AM5 Gaming Motherboard
The ASRock Phantom Gaming B850I Lightning WiFi is a Mini-ITX motherboard designed for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series processors, featuring PCIe Gen5, DDR5 support, advanced power design, and high-speed networking for compact gaming and productivity builds.
Key Features
-
AMD AM5 Ready
Supports Ryzen 9000, 8000 and 7000 Series processors -
Robust Power Design
10+1+1 power phase, 110A SPS for VCore with enlarged heatsink armor -
High-Speed DDR5 Memory
- 2 x DDR5 DIMM slots, dual-channel
- Supports ECC/non-ECC, un-buffered, up to 8200+ (OC)
- Max system memory: 128 GB
-
Supports XMP and EXPO memory profiles
-
PCIe Gen5 for Graphics & Storage
- 1 x PCIe 5.0 x16 slot (graphics)
- 1 x Blazing M.2 (PCIe Gen5x4)
- 1 x Hyper M.2 (PCIe Gen4x4)
-
Supports NVMe SSDs as boot disks
-
Premium Audio
Realtek ALC1220 7.1 CH HD Audio Codec with Nahimic audio -
Next-Gen Networking
- Killer 2.5G LAN (E3100) with prioritization engine
-
802.11axe Wi-Fi 6E module with Bluetooth 5.2 and MU-MIMO
-
Versatile USB Connectivity
- Rear: USB 3.2 Gen2 Type-C, USB 3.2 Gen2 Type-A, USB 3.2 Gen1, USB 2.0
-
Front: USB 3.2 Gen1 Type-C, USB 3.2 Gen1, USB 2.0
-
Display Connectivity
- 1 x HDMI 2.1 TMDS/FRL 8G
-
1 x USB Type-C with DP-Alt Mode (DP 1.4 HBR3)
-
Convenience & Reliability
- BIOS Flashback support with dedicated button
- Flexible integrated I/O shield
- ASRock Lightning Gaming Ports for low-latency peripherals
- EZ Update with ASRock Auto Driver Installer
Highlight Technologies
10+1+1 Power Phase Design
VCore with SPS design delivers smoother and cleaner power to the CPU for stable performance.
Blazing M.2 (PCIe Gen5 x4)
Supports up to 2 x NVMe M.2 SSDs, including one PCIe Gen5x4 slot for ultra-fast storage.
Wi-Fi 6E (802.11axe)
Enhanced wireless with better throughput, lower latency, and extended 6 GHz band support (Windows 11, regional and router requirements apply).
USB Type-C (DP-Alt Mode)
USB Alternate Mode allows the USB Type-C port to carry both data and DisplayPort video output through a single cable.
Killer Ethernet E3100
Killer 2.5 Gbps LAN with prioritization engine optimizes networking for gaming and multimedia.
Lightning Gaming Ports
Specially designed USB ports optimized for high-speed mice and keyboards to reduce jitter and latency.
Specifications
Platform
| Item | Description |
|---|---|
| Form Factor | Mini-ITX, 6.7" x 6.7" (17.0 cm x 17.0 cm) |
| PCB | 8 Layer PCB |
| Chipset | AMD B850 |
| Unique Features | PCIe Gen5 (Graphics, M.2), Dual Channel DDR5, Rock-Solid Durability, Flexible Integrated I/O Shield |
CPU
| Item | Description |
|---|---|
| Socket | AMD Socket AM5 |
| Support | Ryzen 9000, 8000 and 7000 Series Processors |
Memory
| Item | Description |
|---|---|
| Memory Technology | Dual Channel DDR5 |
| Slots | 2 x DDR5 DIMM |
| Capacity | Up to 128 GB system memory |
| Supported Memory | DDR5 ECC/non-ECC, un-buffered, up to 8200+ (OC) |
| Profiles | Supports XMP & EXPO memory modules |
Expansion Slots
| Source | Slot / Socket |
|---|---|
| CPU | 1 x PCIe 5.0 x16 (PCIE1), supports x16 mode |
| Chipset | 1 x Vertical M.2 (Key E) for type 2230 WiFi/BT PCIe module |
PCIe Behavior
- PCIE1:
- Gen5x16 with Ryzen 9000 and 7000 Series
- Gen4x8 with Ryzen 8000 (Phoenix 1)
- Gen4x4 with Ryzen 8000 (Phoenix 2)
Graphics
| Item | Description |
|---|---|
| Integrated Graphics | Integrated AMD RDNA graphics (support varies by CPU) |
| HDMI | 1 x HDMI 2.1 TMDS/FRL 8G, HDR, HDCP 2.3, up to 4K 120 Hz |
| USB Type-C (DP-Alt) | 1 x USB 3.2 Gen2 Type-C, DP 1.4 HBR3, up to 4K 60 Hz (DP-alt supports DP1.4a) |
Audio
| Item | Description |
|---|---|
| Codec | Realtek ALC1220 7.1 CH HD Audio with Content Protection |
| Design | Impedance Sensing on rear out, individual PCB layers for R/L channels |
| Software | Nahimic Audio |
LAN
| Item | Description |
|---|---|
| Controller | Killer E3100 2.5 Gigabit LAN |
| Speed | 10/100/1000/2500 Mb/s |
| Software Support | Killer LAN Software |
Wireless LAN & Bluetooth
| Item | Description |
|---|---|
| Standard | 802.11axe Wi-Fi 6E Module |
| Support | IEEE 802.11 a/b/g/n/ac/ax/axe |
| Band | Dual-Band 2x2 with extended 6 GHz band support |
| Wi-Fi 6E Notes | Requires Windows 11, regional approval, and 6 GHz compatible router |
| Antennas | 2 x antennas, 2T2R diversity technology |
| Bluetooth | Bluetooth 5.2 |
| MU-MIMO | Supported |
USB
| Source | Ports & Connectors |
|---|---|
| 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.
- USB32_23 are Lightning Gaming Ports.
- USB32_TC1 supports up to 40 Gb/s as a USB4 port with Ryzen 8000 (Phoenix 1 and Phoenix 2) processors.
Rear Panel I/O
- 2 x Antenna Ports
- 1 x HDMI Port
- 1 x Optical SPDIF Out
- 2 x USB 3.2 Gen2 Type-A (10 Gb/s)
- 1 x USB 3.2 Gen2 Type-C (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 Killer 2.5G LAN Port
- 1 x BIOS Flashback Button
- 1 x Line Out Jack (Gold)
- 1 x Microphone In Jack (Gold)
Storage
| Source | Connector | Mode / Speed |
|---|---|---|
| CPU | 1 x Blazing M.2 (M2_1, Key M, 2280) | PCIe Gen5x4 (128 Gb/s) |
| Chipset | 1 x Hyper M.2 (M2_2, Key M, 2280) | PCIe Gen4x4 (64 Gb/s) |
| Chipset | 2 x SATA3 6.0 Gb/s connectors | SATA storage |
- M2_1 is first priority for M.2 installation.
- M2_1: Gen5x4 with Ryzen 9000 & 7000; Gen4x4 with Ryzen 8000 (Phoenix 1 & Phoenix 2).
- Supports NVMe SSDs as boot disks.
RAID Support
- SATA: RAID 0, RAID 1
- M.2 NVMe: RAID 0, RAID 1, RAID 10
- RAID 10 requires additional M.2 NVMe expansion cards.
Connectors
- 1 x Thermistor Cable Header
- 2 x Addressable LED Headers (5V, total up to 5V/3A, 15W LED Strip)
- 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)
- CPU_FAN1, CHA_FAN1, AIO_PUMP support up to 3A (36W)
- Auto-detect 3-pin / 4-pin fans
- 1 x 24-pin ATX Power Connector
- 1 x 8-pin 12V Power Connector (Hi-Density)
- 1 x Front Panel Audio Connector
- 1 x USB 2.0 Header (supports 2 x USB 2.0 ports)
- 1 x USB 3.2 Gen1 Header (supports 2 x USB 3.2 Gen1 ports)
- 1 x Front Panel USB 3.2 Gen1 Type-C Header
BIOS
| Item | Description |
|---|---|
| Type | 256Mb AMI UEFI Legal BIOS with GUI support |
| Features | ASRock EZ Mode, Full HD UEFI, Instant Flash, Auto Driver Installer |
Software & UEFI Utilities
- ASRock Motherboard Utility (Phantom Gaming Tuning)
- Killer Control Center
- ASRock Polychrome SYNC
Operating System Support
- Microsoft Windows 10 64-bit
- Microsoft Windows 11 64-bit
Certifications
- FCC
- CE
- ErP/EuP ready (ErP/EuP ready power supply required)
Accessories Included
- 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
