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A USB type C port can use two SSxx and one HSxx
Can you show an example or documentation of a USB-C port with two SSxx ports? I know USB-C has enough lanes for that (4 lanes, each SS requires two lanes, one for receive and one for transmit) but I haven't heard of anyone implementing that. Maybe having two SS removes the need for orientation detection circuitry (when you flip the USB-C upside down), so that one way uses SS01 and the other way uses SS02 but you can't use both at the same time. This would only work for USB-C ports that don't support DisplayPort alt mode.