StarTech.com Thunderbolt 3 to 10GbE Fiber Network Chassis - External enclosure - 4 Open SFP+ Ports - This Thunderbolt 3 network adapter connects your Thunderbolt 3 device to a 10GbE network via a PCIe expansion chassis - Thunderbolt 3 10 GbE NIC - Thunder

"This Thunderbolt™ 3 to 10GbE NIC lets you connect your Thunderbolt 3 enabled device to a 10 Gigabit Ethernet network. This adapter combines the StarTech.com Thunderbolt 3 PCIe Expansion Chassis (TB31PCIEX16) and the 2-port PCI Express 10G NIC (ST10GPEXNDPI), giving you one DisplayPort output, one additional Thunderbolt 3 port and two 10GbE ports. Reliable, high-performance and versatile multimode connectivity This 10G network card utilizes the Intel® X550 chipset with Intel® Virtualization Technology for connectivity, delivering the power, performance and enhanced capabilities you need for dependable network connections. Install and assemble with ease Requiring only a Phillips type screwdriver, you can assemble this Thunderbolt 3 to 10GbE NIC chassis in minutes. It connects easily through a single Thunderbolt 3 port on your computer. Change up your chassis The Thunderbolt 3 chassis not only pairs well with the 10GbE NIC -- the card can be swapped for other PCIe cards to help support other functionality and performance. With the extra TB3 port and DP output built into the chassis, you will always have the ability to hook up extended displays to multitask effortlessly. The TB31PCIEX16 and ST10GPEXNDPI are backed by a StarTech.com 2-year warranty."