On Thu, 12 Apr 2007, nesta wrote:
> hi all,
>
> i m little confused about usb 1.1 and usb 2, so
>
> 1. i think that any full-speed device would support usb1.1 only and does not
> support usb2,is it right?
Wrong. Some full-speed devices support USB 2.
> 2. i think that any high-speed device would support usb1.1 and usb2,is it
> right?
Right.
> 3. what is the main difference between usb1.1 and usb2
The main difference is this:
USB 1.1 devices may run at low speed or at full speed. They
may not run at high speed.
USB 2 devices may run at low speed, full speed, or high speed.
Alan Stern
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