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1. The power isn't mentioned anywhere in the question. 2. Same thing could happen to USB 2.0 devices, because one port can't power whole hub. 3. You can't assume that a device will decrease it's transfer speed because of low power condition. It may refuse to work at all or it may attempt to save power in some other way.
– AndrejaKo
Commented May 6, 2011 at 7:29
@AndrejaKo 1. It isn't, but it figures in. 2. It does happen with USBv2. And we do see reduced (v1.1) speeds when using via a hub. 3. I did say 'might not work or might work in a low power mode'
– MyPreciousss
Commented May 6, 2011 at 7:30
1

The wikipedia page doesn't say anything about the issue (I checked there beforehand). I know that USB 3 has more than enough theoretical capacity, the question is how USB2-over-USB3 is implemented.
– Martin
Commented May 9, 2011 at 13:38
1

It's unfortunate that the design provides no way for a USB 3.0 hub to reroute USB 2.0 traffic over the SuperSpeed bus.
– David Schwartz
Commented Aug 26, 2011 at 6:57

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