USB 2.0 has been helpful to develop hotplug features and single data channel at maximum transfer speed.

With the new netbook architecture, we soon realize that USB 3.0 should not be bundling wires to reduce inductance due to wire length.

We can use high frequency amplifiers on mixed signals as repeaters on the USB hubs.

USB 3.0 must have edgeQam channels to afford multi channel simultaneous data transfer capability. Which can have 4 or 8 channels of segmented data transfer to do parallel data processing for multicored cpus or single core realtime operating system with multithreads. USB devices can have fixed or scanning channel bonding with the cpu. GUI panel can popup upon hotplug, for any USB device configuration or instructions to handle specific data from each firmware itself.

USB3.0 then would have 1 ghz carrier frequency and many subcarriers of 6/8 mhz division(64-256 channels; USB has 127 ports). Then USB 4.0 will use over 2.4 ghz to have more than 1024 channels of data transfer simultaneously.

Fortunately, edgeQam circuits are now either asic or DSP with firmware, so that hardware can be handle by cpu(DSP such as ARM) without any external devices for clocks or fixed frequency tuned circuits.