This page documents two parts of what is working and what is not working with Thunderbolt on Unraid.
Part 1: The generic subsystems (for want of another name - perhaps someone can describe something technically more accurate here)
Part 2: Specific matches of PCIe hardware to Hosts systems
To date the following Thunderbolt subsystems are confirmed working on UnRaid:
Storage: Working
Networking: TBC
Display: Passthrough