Why don't PCs come with only USB-3 ports?

For a Envy 4 Ultrabook this is a pretty common problem and its because the USB ports are right below a slight extrusion or lip of case If the USB cable you

I have now seen a number of cases where USB devices are not detected It seems that the xhci_hcd driver needs to be replacedreinitialised

usb c slot USB is a Universal Serial Bus standard, released in November 2008 Most new computers and devices being manufactured today support

usb 20 slot USB is a Universal Serial Bus standard, released in November 2008 Most new computers and devices being manufactured today support