The ConnectCore 8X system-on-module has one USB 3.0 SuperSpeed (SS) interface with integrated PHY.
On the ConnectCore 8X SBC Pro:
USB_SS3 can be used as OTG (host or device).
Version 2 of the ConnectCore 8X SBC Pro does not support USB 3.0 SuperSpeed (SS) due to missing serial decoupling capacitors downstream from the analog switch. You can still use the USB Type-C connector to perform connections as a USB 2.0 Host.
Contact Digi Support Services for more information on supporting USB 3.0 SuperSpeed on your carrier board design.