On Wed, 13 Apr 2016, John Youn wrote:

> > Besides, this doesn't say what the version number of a non-Enhanced 
> > SuperSpeed device should be.  I don't see why the USBCV would conclude 
> > that a non-Enhanced device needs to set the version to 0x0310.
> 
> Non-Enhanced SuperSpeed (i.e. HS and lower) devices follow the USB 2.0
> spec.
> 
> Or do you mean SuperSpeed-only devices?
> 
> In the 3.1 spec, "Enhanced SuperSpeed" means either SuperSpeed (Gen 1)
> or SuperSpeedPlus (Gen 2). So they should set bcdUSB to 0x0310 as
> well.

Yes, all right, I misunderstood.  So the USB-IF really did invalidate
all the existing 3.0 devices when the 3.1 spec was released.

That doesn't make much sense.

Alan Stern

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