FW: [Malvern] USB compatibility

[Richard Forster]

http://www.everythingusb.com/usb2/faq.htm

This basically confirms what Chris wrote. Data transfer will be at 
whatever speed both ends are capable of. Remember to be aware of the 
marketing use of USB 2.0 to refer to all the available speeds "so that 
customers are not confused". USB 2.0 High Speed is the full 480 Mbps link.

Cheers

Rick

Chris Eilbeck wrote:
>>My techy query to you lot now.  How backwards compatible is USB v2 to v1.0
>>and v1.1? 
> 
> 
> Fairly.  I've yet to find a device/host that you can't plug together and
> have them work to some degree.  Usually a device will fall back to 1.1
> compatible and things will talk to each other.
> 
> 
>>Can you use the v2 socketary to connect to a v1.x device? 
> 
> 
> Connectors are just the same.  You might need better cabling to run at 2.0
> speeds.
> 
> 
>>I have some new kit coming in that needs v2 and all my USB stuff is v1.x
>>so if I have to upgrade I don't really want to run both sets of socketary
>>if one will do.
> 
> 
> Chances are it'll all just work but at 1.1 speeds i.e. 12mbits/s.
> 
>