StarTech.com Thunderbolt 3 PCIe Expansion Chassis w/ DisplayPort – PCIe x16 – External PCIe Slot for Thunderbolt 3 Devices (TB31PCIEX16) - system bus

This Thunderbolt 3 PCIe expansion chassis lets you add a PCI Express card to your laptop or desktop computer, through an external Thunderbolt 3 connection. The chassis also features a DisplayPort video output, so you can connect an additional monitor to your laptop, and supports Thunderbolt 3 daisy chaining, so you can expand your workstation even further.