USB4 CPU Controller
It's worth noting that while Thunderbolt 4 and USB4 both use the Type-C connector and offer a maximum speed of 40Gbps, they differ in certain aspects. For instance, Thunderbolt 4 ports are marked with a Thunderbolt symbol, whereas USB4 ports lack any such marking. Additionally, USB4 comes in two versions: USB4 20 and USB4 40, representing transmission speeds of 20Gbps and 40Gbps, respectively. On September 1, 2022, the USB-IF officially announced the new generation of the data interface specification, USB4 2.0 version, supporting up to 80Gbps data transmission rate.
Currently, devices equipped with Apple's M1 and M2 chips, AMD Ryzen 6000 series APUs, and Intel's 11th Gen Tiger Lake H processors support USB4.
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