Views: 89 Author: Site Editor Publish Time: 2022-06-17 Origin: Site
You might find USB4 and Thunderbolt cables with different markings. The main difference between USB4 and Thunderbolt is that some USB4 features are optional for USB4, but they’re all included in Thunderbolt 4. So a Thunderbolt cable is always specified for 40Gb/s symbol rate, whereas you can buy 20Gb/s or 40Gb/s cables rated for USB4. A 40Gb/s USB4 cable is fully compatible with a Thunderbolt 4 cable, and vice versa. They both work with Thunderbolt 3, Thunderbolt 4, USB 2.0, USB 3.x, and USB4. There are both passive and active versions of both, for speeds up to 40Gb/s (bit rate, not link rate). As you can see, Thunderbolt cables use the lightning symbol and the version number (3,4), USB cables use the peak bitrate.