USB4 HostA USB4 host contains:• A Host Router.• An internal host controller.• A DisplayPort Source.A USB4 host can also optionally contain a PCIe controller.A USB4 host supports 20G USB4 operation (Gen2x2) and optionally 40G USB4 operation(Gen3x2).A USB4 host is required to support DisplayPort Alt Mode on all of its DFP . See the USB Type-CSpecification for a full definition of the requirements and details regarding DisplayPort Alt Modesupport on a DFP.