Crosshair Extreme x670e - Can you use Thunderbolt devices on the USB 4 ports?

[decimus28]

My main question is if you can use Thunderbolt 3 external HDD enclosures over the USB 4.0 Ports. Although I wonder about other Thunderbolt devices


The usb 4 ports use the Intel Mapleridge(JHL8540) Thunderbolt 4 controller and the ports are the 40 speed USB4 option. Also Thunderbolt drivers are installed on setup. The only thing I could see that would make it not fully TB4 compliant is if it provides the lower 7.5 watt vs TB4 minimum of 15watt or due to dual monitor support.

[decimus28]

They could have implemented the Ports non Thunderbolt spec. My guess would be that it doesn't meet the wattage requirements for full Thunderbolt 4 or it's a resolution issue. It does utilize the full PCIe3.0 x4 lanes though. Here is what I've found so far. https://imgur.com/a/GwkI5dd