First introduced in 2008 usb 30 adds a new transfer mode called superspeed distinguishable from usb 20 by either the blue colour of the port or the initials ss capable of transferring data at up to 5 gbits more than ten times as fast as the 480 mbits top speed of usb 20. If you see the ss prefix in front the regular usb logo you successfully identified the usb 30 port. Letter From America Connectivity By The Numbers The plastic tab inside is also yellow unlike the other port but that could be a one off thing.
