Notes - Thunderbolt 3 port is required for operation. This adapter will not function with regular USB-C port. - some computers may only support a single video output over Thunderbolt 3 port. Please check with your computer video specification.. - Your PC may need updates for the Thunderbolt Ports to function properly. Check your computer manufacturer for Up-to-date system BIOS, Thunderbolt 3 drivers, and graphics (GPU) drivers.