The Cable Buys Headroom: 91% of a USB 2.0 Bus, 3.6% of a Thunderbolt One

The best USB 2.0 pass in 45 tethering records used 91% of what that bus can usably carry. The same link on a SuperSpeed cable uses 3.6%. USB speed is autonegotiated between host, cable and device, the slowest one wins, and nothing anywhere tells you the cable capped you.

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