Product Type | Motherboard |
Form Factor | Mini-ITX |
Chipset | AMD B550 |
CPU Socket Type | Socket AM4 |
Supported Processors | AMD Ryzen 5000 Series, 3rd Gen Ryzen, and 3rd Gen Ryzen with Radeon Graphics |
Power Phase | Direct 8 Phases Digital VRM |
Power Connector | 1 x 24-pin ATX main power, 1 x 8-pin ATX 12V power |
BIOS Features | Q-Flash Plus, DualBIOS |
RGB Lighting | RGB Fusion 2.0 |
Operating System Support | Windows 10 64-bit |
GIGABYTE B550I AORUS PRO AX Mini-ITX AMD AM4 Motherboard



Key Benefits

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- Ideal for space-constrained builds thanks to Mini-ITX design and comprehensive features
- Future-ready connectivity with PCIe 4.0, WiFi 6, and 2.5GbE LAN for high-speed performance
- Advanced thermal and power delivery architecture ensures system stability under load
Product Overview
The GIGABYTE B550I AORUS PRO AX is a Mini-ITX motherboard built for AMD Ryzen desktops, offering compatibility with Ryzen 5000 and 3rd Gen processors via Socket AM4. Engineered with Direct 8 Phases Digital VRM and advanced thermal design including VRM heatsinks and thermal baseplate, it ensures robust power and cooling in compact builds. The inclusion of dual PCIe 4.0/3.0 M.2 slots with Thermal Guards maximizes storage performance. Featuring Intel WiFi 6, 2.5GbE LAN, RGB Fusion 2.0, and Q-Flash Plus BIOS update support, this board stands out as an ideal foundation for performance-driven SFF systems.
Specifications
Product Overview
Storage Interfaces
M.2 Slots | 2 x M.2 (1x PCIe 4.0 x4, 1x PCIe 3.0 x4 & SATA) |
SATA Ports | 4 x SATA 6Gb/s |
RAID Support | RAID 0, 1, and 10 |
Graphics
Integrated Graphics Support | Yes (requires APU with integrated graphics) |
Display Outputs | 1 x HDMI 2.1, 1 x DisplayPort 1.4 |
Maximum Resolution | HDMI: 4096x2160 @60Hz, DisplayPort: 5120x2880 @60Hz |
Networking
LAN Controller | Intel 2.5GbE LAN (Intel I225-V) |
Wireless LAN | Intel Wi-Fi 6 AX200 |
Bluetooth | Bluetooth 5.0 |
Rear I/O Ports
USB Ports | 2 x USB 3.2 Gen2 Type-A, 1 x USB 3.2 Gen2 Type-C, 2 x USB 3.2 Gen1, 2 x USB 2.0 |
Audio Jacks | 5 x Audio jacks + 1 x S/PDIF optical out |
LAN | 1 x RJ-45 |
Display Outputs | 1 x HDMI, 1 x DisplayPort |
Compliance & Origin
Country of Origin | China |
Certifications | CE, FCC, BSMI, KCC, VCCI, RCM |
RoHS Compliance | Yes |
Advanced Security Features
Secure Boot | Yes |
TPM Header | 1 x TPM Header (for TPM module) |
Memory
Memory Type | DDR4 |
Memory Slots | 2 x DIMM |
Maximum Memory Supported | 64 GB |
Memory Channel Support | Dual Channel |
Memory Speed Support | DDR4 2133/2400/2666/2933/3200 MHz (native); up to DDR4 5100 MHz (OC) |
ECC Support | Un-buffered ECC/non-ECC compatible |
Expansion Slots
PCIe x16 Slots | 1 x PCIe 4.0/3.0 x16 |
Audio
Audio Codec | Realtek ALC1220-VB |
Audio Channels | 7.1-Channel High Definition Audio |
S/PDIF | 1 x Optical S/PDIF Out |
Internal I/O Connectors
USB Headers | 1 x USB 3.2 Gen1 header, 2 x USB 2.0 headers |
RGB Headers | 1 x RGB LED header, 1 x Addressable LED strip header |
Front Audio Header | Yes |
Physical & Environmental
Dimensions (W x D) | 17 cm x 17 cm |
Operating Temperature | 0°C to 80°C |
Storage Temperature | -40°C to 85°C |
Operating Humidity | 10% to 90% (non-condensing) |
Storage Humidity | 5% to 95% (non-condensing) |
Cloud Management & Licensing
Q-Flash Plus | BIOS update without CPU/Memory/Graphics Card |