The ASUS ThunderboltEX 4 is an expansion card featuring the JHL 8540 controller for Intel-based systems. It supports daisy chaining and offers backward compatibility with Thunderbolt 3 and USB-C devices.
Technical Specifications
Supports Thunderbolt 4 and USB-C devices
JHL 8540 controller for superior performance
Daisy chaining capability for up to 6 devices
Backward compatible with Thunderbolt 3 and USB 3.2