USB3 was also supposed to have fiber components. Really hard to find references for this online since at CES 2008 they showed the connectors without any optical stuff, but I found this: <a href="http:&#x2F;&#x2F;www.theregister.co.uk&#x2F;2007&#x2F;09&#x2F;19&#x2F;idf_usb_3_announced&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.theregister.co.uk&#x2F;2007&#x2F;09&#x2F;19&#x2F;idf_usb_3_announced&#x2F;</a><p>Anyone know why they didn&#x27;t end up going optical + copper for USB3?