Can someone explain the output from lsusb here?

[Dotan Cohen]

> Well, I finally found time to properly investigate this little problem,
> and started by testing it with other devices. To mixed emotions I
> discovered that my original Microsoft optical mouse (Intellimouse) does
> not work in any of the four USB ports on the left edge of the Vostro. It
> *does* work in both the ports on the right hand edge. It is very
> difficult to insert the USB plug into the any of the four right-hand
> ports, too, but not so difficult that there is any suggestion of damage
> happening. Just very stiff.
>
> Another mouse - a younger Logitech Click! optical mouse, works in all
> six ports, and its plug is noticeably easier to insert into the
> right-hand ports.
>
> I then tried a memory stick - it works in all six ports. As did two
> other memory stick of various sizes and very varied vintage.
>
> A 2.5" USB drive enclosure with a 160Gb drive in it powers up but does
> not trigger any USB software activity at all. However, when I replace
> the drive in the enclosure with a 40Gb drive, it works in all six USB
> ports, so I suspect the enclosure itself (or possibly the disk, but as
> far as I know it is OK).
>
> A Logitech QuickCam Notebook Pro with a built in microphone is detected
> as a camera and mike by the right hand ports, but only as a mike by the
> left hand ports. Once detected though, it works fine as a camera or a
> mike in all but one of the left hand ports! It gets power in all four.
>
> Adding a hub between the cam and the USB ports did not help.
>
> So confusion reigns :-( but it looks to me like dicky contacts in the
> left-hand four ports. Or possibly in my cables, of course.
>
> I'm happy that I can arrange my various USB devices to my satisfaction,
> and will try to document all this more comprehensively before taking the
> matter to Dell (which I may not do, as the pain threshold has not really
> been crossed :-)
>
> Thank you for the many ideas.
>
> Regards, K.
>

You might want to try cleaning the USB contacts with alcohol on a
cotton swab. I once had a USB port on a laptop refuse a mouse but work
with a printer until I cleaned it.

-- 
Dotan Cohen

http://what-is-what.com
http://gibberish.co.il