This Thunderbolt™ 3 to 10GbE NIC lets you connect your Thunderbolt 3 enabled device to a 10 GbE network. This adapter combines the StarTech.com Thunderbolt 3 PCIe Expansion Chassis (TB31PCIEX16) and the PCI Express 10G NIC (ST10000SPEXI), giving you one DisplayPort output, one additional Thunderbolt 3 port and one RJ45 (10GbE) port.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, this Thunderbolt 3 to 10GbE NIC can be assembled and connected 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--you can swap the NIC out 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 effortlessly multitask. The TB31PCIEX16 and ST10000SPEXI are backed by a StarTech.com 2-year warranty.