Startech.com TB2USB3GE Thunderbolt to Ethernet and USB 3.0 Converter
Product ID: TB2USB3GE. StarTech Thunderbolt to Gigabit Ethernet plus USB 3.0 - Thunderbolt Adapter. NOTE:THIS IS FOR THUNDERBOLT VIA Firewire 800/400 connectors and will NOT work on Macs with Thunderbolt on USB-C ports.