My Epson scanner now works - without USB 2

David Fletcher fc at fletchersweb.net
Tue Mar 28 22:24:33 UTC 2006


On Tuesday 28 Mar 2006 18:29, Jeff Vian wrote:
> On Tue, 2006-03-28 at 18:03 +0100, James Wilkinson wrote:
>
> Some boards have different speed ports at different locations.
> I have seen some with a pair of 1.1 ports and a pair of 2.0 ports on the
> back, and depending on which motherboard connector you used for the
> front panel connectors you could also get different speeds there.
> Most of the newer boards are at least consistent with having all 2.0
> ports and most newer cases are all 2.0 compliant.
>
> Some older cases had front panel connectors that were built with 1.1
> standards and may not be capable of running 2.0 so if they try it causes
> errors.  Sometimes the ability to handle high speed devices is bios
> dependent as well.
>

I know that the front panel connectors switch from USB 2.0 to USB 1.1 as a 
BIOS setting. I've copied a 100MB file from a USB flash drive and the 
difference is evident.

Also it's the same USB socket with the same cable that works in one mode and 
not the other.

Dave F

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