Board Layout

The B550I AORUS Pro AX utilizes a neutral color scheme that will be easy to match with almost any system or build. The PCB is completely black, while the heatsinks and rear I/O cover are a dark gray.


The CPU socket is very open for a Mini-ITX board, but users with large air coolers should still check for clearance.


There are two M.2 slots on the Gigabyte B550I AORUS Pro AX; one above the PCIe x16 slot which supports PCIe 4.0 connectivity and another on the back of the board.


The Gigabyte B550I AORUS Pro AX offers one PCI Express x16 slot that is PCIe 4.0 ready. The board has a total of four SATA 6 Gb/s ports on the side.


The Gigabyte B550I AORUS Pro AX has a pretty typical Mini-ITX I/O offering, which is to say it is sparse.

• 2x HDMI port
• DisplayPort
• 4x USB 3.2 Gen1 Type-A ports
• Q-Flash Plus button
• USB 3.2 Gen2 Type-A port
• USB 3.2 Gen2 Type-C port
• RJ-45 LAN port
• Antenna ports
• 3x 3.5 mm audio jacks

Networking on the Gigabyte B550I AORUS Pro AX is handled by Realtek's RTL8125BG 2.5 Gb/s controller. For wireless connectivity, there is an 802.11 ax WiFi module.