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USB3: why it's a bit harder than USB2
USB3: why it's a bit harder than USB2
A lot of the challenges come from the way we work around physical-layer limitations. Put poetically, physics gives us lots of little obstacles we have to work around in order to talk at 5 billion transfers per second (5GT/s). It’s not trivial to get the same bias voltages – and common grounds – across a long motherboard or down a cable – and when you’re operating at really high frequencies, you’re a lot more sensitive to changes in your operating environment
