PCIe x16 PCI-e x16 to TB3 Extension Cable PCI-Express Cables eGPU Adapter Thunderbolt 3 graphics card docking station - Newegg.com
StarTech.com Thunderbolt 3 to FireWire Adapter - External PCI Enclosure - PCIe Card plus TB3 Chassis - The Thunderbolt 3 to 1394 FireWire adapter connects your FireWire peripherals to your Thunderbolt 3
eGPU Performance Loss – PCI Express vs. Thunderbolt | Thunderbolt macOS eGPU