The GIGABYTE B550I AORUS Pro AX is a premium Mini-ITX motherboard engineered for builders who want flagship performance in the smallest form factor. Built on AMD's B550 chipset with the AM4 socket, this compact powerhouse delivers full ATX-class features in a tiny 17×17 cm package — making it the ideal foundation for SFF (Small Form Factor) builds, HTPCs, LAN rigs, and minimalist desktop setups.

Compatible with AMD Ryzen 3000, 4000 G-Series, 5000 G-Series, and 5000 Series processors (including Ryzen 9 5950X), the B550I AORUS Pro AX features a direct 8-phase 90A SPS power solution, PCIe 4.0, dual M.2 slots, WiFi 6E, and premium audio — proving that small form factor doesn't mean small performance.

📐 Mini-ITX Form Factor — Compact Powerhouse

Maximum performance in minimum space:

• 17 × 17 cm Mini-ITX form factor
• Perfect for SFF cases like NR200, NCASE M1, Dan A4-SFX, Lian Li A4-H2O
• Compact yet powerful — supports flagship AMD Ryzen 9 CPUs
• Ideal for HTPC, LAN rigs, minimalist desktops, console-replacement builds
• No compromise on aesthetics — sleek black/silver design

⚡ Direct 8-Phase 90A SPS Power Solution

Flagship-class power delivery in a tiny package:

• Direct 8 Phases Digital VRM (6+2 phases for Vcore and SOC)
• 90A Smart Power Stage (SPS) per phase — Total 720A power design
• Solid-Pin 8-pin CPU Power Connector
• Solid-plated ATX 24-pin power connector
• 2X Copper PCB design for handling greater than normal power loads
• Digital PWM Controller for precise voltage delivery
• Engineered to handle Ryzen 9 5950X, 5900X at full boost without throttling

💾 DDR4 5300+ MHz Memory Support

Push memory performance to extreme heights:

• 2× DDR4 DIMM slots — Up to 64GB total capacity
• DDR4 5300+ MHz (OC) support
• Intel® XMP profile support (5300+ MHz validated)
• Dual Channel Memory Architecture
• ECC and Non-ECC Un-buffered DDR4 support
• 1 DIMM Per Channel design for cleaner signaling

🚀 PCIe 4.0 + Dual M.2 Storage

Lightning-fast graphics and storage despite compact form:

• 1× PCIe 4.0 x16 slot with Ultra Durable™ reinforcement
• 2× M.2 NVMe slots (PCIe 4.0/3.0 x4 with Thermal Guard)
• NVMe RAID support for record speeds:
• ↳ Sequential Read: up to 6,560 MB/s
• ↳ Sequential Write: up to 6,669 MB/s
• 4× SATA 6Gb/s for additional storage
• Thermal Guards on both M.2 slots prevent throttling

🌐 WiFi 6E + 2.5G LAN — Premium Connectivity

Next-generation networking for low-latency gaming:

• WiFi 6E (802.11ax) — Tri-band (2.4 / 5 / 6 GHz)
• Bluetooth 5.2 for modern peripherals
• Realtek 2.5 Gigabit Ethernet with Bandwidth Management
• AORUS Antenna with smart antenna function for best signal strength
• Multiple angle tilt and magnetic base for optimal positioning

🔌 Modern USB Connectivity

Comprehensive USB despite compact size:

• 1× USB 3.2 Gen 2 Type-C (rear, 10 Gbps)
• Multiple USB 3.2 Gen 2 Type-A ports (rear)
• USB 3.2 Gen 1 Type-A ports
• USB 2.0 ports for legacy devices
• Q-Flash Plus dedicated USB port for BIOS updates

🌡️ Advanced Thermal Design — Built for Compact Cases

Engineered cooling for sustained performance in tight spaces:

• Extended VRM Heatsink with Multi-Layered design
• Thermal Baseplate for backside cooling
• Direct-Touch Heatpipe for efficient heat dissipation
• Thermal Guards on both M.2 slots
• Smart Fan 5 with multiple temperature sensors
• Hybrid Fan Headers with PWM/DC auto-detection
• Liquid cooling friendly design

📺 Dual HDMI 2.1 + DisplayPort

Premium display connectivity:

• Dual HDMI 2.1 ports — 48 Gb/s bandwidth (2× more than HDMI 2.0)
• 4K @ 60Hz, 21:9, HDCP 2.3 support
• 1× DisplayPort
• Full HDR support
• Perfect for HTPC and multi-monitor setups
• Note: Display output requires APU (Ryzen with Radeon Graphics)

🎵 AMP-UP Audio with ALC1220-VB

Audiophile-grade audio for immersive experiences:

• Realtek ALC1220-VB codec
• 120 dB SNR on rear audio output
• 110/114 dB SNR on front/rear microphone
• Hi-Res Audio certified (frequencies up to 40kHz+)
• Nichicon Fine Gold audio capacitors
• Smart Headphone Amp with auto-impedance detection
• AMP-UP Audio technology for clean signal

🎨 RGB FUSION 2.0

• RGB FUSION 2.0 for full lighting control
• Onboard ARGB headers for ARGB/RGB devices
• Subtle LED accent strip integrated into design
• Sync with compatible AORUS, GIGABYTE, and ARGB ecosystem
• Sleek black/silver aesthetic

🛠️ Builder-Friendly Features

• Q-Flash Plus — Update BIOS without CPU/RAM/GPU
• Easy BIOS update via dedicated button
• One-piece stainless steel PCIe shielding against PCB distortion
• Pre-mounted I/O Shield
• Smart Fan 5 with intuitive control
• RAID configuration support

🛡️ Ultra Durable™ Technology

GIGABYTE's signature reliability features:

• 2X Copper PCB for superior heat dissipation
• One-piece stainless-steel PCIe shielding (20% wider)
• Solid Pin Power Connectors
• Anti-Sulfur Resistor Design
• Server-Level Choke for extended lifespan

🎯 Why GIGABYTE B550I AORUS Pro AX?

• ✅ Mini-ITX form factor — Build the ultimate SFF rig
• ✅ Flagship-class VRM in tiny package
• ✅ 720A power design handles Ryzen 9 5950X
• ✅ WiFi 6E + 2.5G LAN — Premium connectivity
• ✅ Dual HDMI 2.1 — Perfect for HTPC builds
• ✅ Audiophile-grade audio with ALC1220-VB
• ✅ Compatible with all AM4 Ryzen 3000/4000/5000 series

Key Features

• AMD B550 Chipset — AM4 socket
• Compatible CPUs: AMD Ryzen 3000 / 4000 G-Series / 5000 / 5000 G-Series
• Mini-ITX form factor (17 × 17 cm)
• Direct 8 Phases Digital VRM (6+2)
• 90A Smart Power Stage per phase (720A total)
• Solid-pin 8-pin CPU power connector
• 2X Copper PCB design
• 2× DDR4 DIMM slots — Up to 64GB at 5300+ MHz (OC)
• Intel XMP support
• ECC + Non-ECC Un-buffered DDR4 support
• PCIe 4.0 x16 slot with Ultra Durable™ reinforcement
• 2× M.2 slots (PCIe 4.0/3.0 x4 with Thermal Guard)
• NVMe RAID up to 6,560 MB/s read speeds
• 4× SATA 6Gb/s ports
• WiFi 6E (802.11ax) + Bluetooth 5.2
• Realtek 2.5 Gigabit Ethernet
• USB 3.2 Gen 2 Type-C (10 Gbps, rear)
• Dual HDMI 2.1 + DisplayPort (4K@60Hz, HDCP 2.3)
• AMP-UP Audio with Realtek ALC1220-VB (120 dB SNR)
• Hi-Res Audio certified
• Nichicon Fine Gold audio capacitors
• Smart Headphone Amp
• Extended VRM Heatsink + Thermal Baseplate
• Direct-Touch Heatpipe
• Smart Fan 5 with multiple temperature sensors
• RGB FUSION 2.0 with ARGB headers
• Q-Flash Plus (no CPU/RAM/GPU needed)
• One-piece stainless-steel PCIe shielding
• Pre-mounted I/O Shield
• Ultra Durable™ Technology
• SKU: MOH-GIGABYTE-B550IAORUS-OB-0059