title: How to list USB port type with speed of connected device?
body: <p>I'd like to have a command that outputs the USB port type (OHCI, UHCI, EHCI, XHCI, ...) and the device (if any) connected to, and the actual speed (HS, FS, SS, ...) for Linux. Preferably all in one line.</p>
  
  <p>I want to find out quickly whether all devices are running at their highest possible speed.</p>