Connects High Performance GPU cards (up to 312mm x 160mm) to computers with a Thunderbolt 3 port. Also supports AVID HDX, Red Rocket-X and other x16 full-length PCIe cards (must have a Thunderbolt 3 connection, USB3C connection and Thunderbolt 2 adapters do not work) 550W power supply supports up to 375W card (up to 8-pin + 8-pin power connectors), and provides up to 87W of Power Delivery to charge a laptop.