GIGABYTE B550I AORUS PRO AX Mini-ITX Motherboard (AM4, Wi‑Fi 6)

Description

Overview

The GIGABYTE B550I AORUS PRO AX is a compact Mini-ITX motherboard built around the AMD B550 chipset for AM4 Ryzen processors. It balances a small footprint with high-speed connectivity, reinforced PCIe 4.0 support and integrated wireless networking for small-form-factor gaming and professional systems. ([gigabyte.com](https://www.gigabyte.com/us/Motherboard/B550I-AORUS-PRO-AX-rev-10))

Performance & memory

Supports AMD Ryzen desktop processors (see manufacturer CPU support list). Memory is dual-channel DDR4 across two DIMMs with a maximum system capacity of 64GB and XMP profile support up to 5300MHz+ (dependent on module). Power delivery uses a direct 8-phase digital VRM with 90A Smart Power Stages for stable CPU support in compact builds. ([gigabyte.com](https://www.gigabyte.com/us/Motherboard/B550I-AORUS-PRO-AX-rev-10))

Storage & expansion

Features two M.2 slots (one CPU-side PCIe 4.0 x4-capable M.2 and a second chipset-side M.2 on the PCB rear that runs PCIe 3.0 x4/SATA), plus four SATA 6Gb/s ports. A reinforced PCIe 4.0 x16 slot provides full-length graphics card support in Mini-ITX chassis. ([gigabyte.com](https://www.gigabyte.com/us/Motherboard/B550I-AORUS-PRO-AX-rev-10))

Connectivity

Onboard networking includes Intel Wi‑Fi 6 (802.11ax) with Bluetooth 5 and a 2.5GbE LAN port. Rear I/O includes a USB 3.2 Gen2 Type-C port and multiple display outputs (DisplayPort and two HDMI ports), making the board flexible for both headless and GPU-accelerated systems. ([gigabyte.com](https://www.gigabyte.com/us/Motherboard/B550I-AORUS-PRO-AX-rev-10))

Cooling & extras

GIGABYTE fit an advanced thermal solution with extended VRM heatsinks, a multi-layered M.2 thermal guard and a thermal baseplate. The board includes Smart Fan 5 features (multiple temperature sensors and hybrid fan headers), AMP-UP audio with ALC1220-VB codec and a pre-installed I/O shield; Q-Flash Plus allows BIOS updates without CPU/DRAM/GPU installed. ([gigabyte.com](https://www.gigabyte.com/us/Motherboard/B550I-AORUS-PRO-AX-rev-10))

• Form factor: Mini-ITX
• Chipset: AMD B550
• Socket: AM4 (see manufacturer for supported CPU list)
• Memory: 2 x DDR4 DIMMs, up to 64GB, XMP support
• Storage: 2 x M.2 (1 × PCIe 4.0 x4, 1 × PCIe 3.0 x4/SATA), 4 × SATA 6Gb/s
• Expansion: 1 × PCIe 4.0 x16 (reinforced)
• Networking: Intel Wi‑Fi 6 (802.11ax) + BT5, 2.5GbE LAN
• Audio: ALC1220-VB with Nichicon audio capacitors
• Rear I/O highlights: USB 3.2 Gen2 Type-C, DisplayPort, 2 × HDMI
• Extras: Pre‑installed I/O shield, RGB headers, Smart Fan 5, Q-Flash Plus