On Tue, 07 Jul 2009 22:49:22 -0700, Dennis Lee Bieber wrote:

> On Tue, 07 Jul 2009 23:37:43 +0100, Nobody <nob...@nowhere.com>
> declaimed the following in gmane.comp.python.general:
> 
>> AFAIK, the only real difference between "USB-1 conformant" and "USB-2
>> conformant" is that the latter actually passed a test of its ability to
>> say "no, I can't do high-speed", while the former didn't. The check for
>> high-speed capability was designed such that it shouldn't cause problems
>> for USB-1 devices, but individual USB-1 devices weren't actually tested
>> for this.
> 
>       USB-1 or USB-1.1? As I recall the latter is capable of 11Mbps
> whereas the original USB spec was much lower... (of course, USB 2 at top
> is 480Mbps)

USB 1.0 supports 1.5Mbps (low-speed) and 12MBps (full-speed). Hosts and
hubs must support both, functions (devices) can use either. USB 1.1 was
a bug-fix release which solved some interoperability issues arising from
ambiguities in the USB 1.0 standard.

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