The ASUS ThunderboltEX expansion card has two Thunderbolt 4 ports, each with a bidirectional bandwidth of 40Gbps, and two mini PD input ports.
According to the official, users can utilize the attached DisplayPort to mini-DisplayPort cable to connect the graphics card to the ThunderboltEX 4 expansion card, and then output through the USB-C interface. The main controller of this expansion card is the Intel JHL8540 Thunderbolt 4 controller.
This ThunderboltEX 4 expansion card requires a 6 pin power supply because each Thunderbolt 4 interface can provide up to 100W of power. Currently, ASUS has not declared the cost of this expansion card.