12th Generation Intel® Core™ Processors
Datasheet, Volume 1 of 2
Extensible Host Controller Interface (xHCI)
Extensible Host Controller Interface (xHCI) is an interface specification that defines Host Controller for a universal Serial Bus (USB 3), which is capable of interfacing with USB 1.x, 2.0, and 3.x compatible devices.
In case that a device (example, USB3 mouse) was connected to the computer, the computer will work as Host and the xHCI will be activated inside the CPU.
The xHCI controller support link rate of up to USB 3.2 Gen 2x1 (10G).