Re: USB port sometimes (!) doesn't recognize 2.0 devices

Hi again,

been testing the whole shebang back and forth;
plugged the HDD to a HP laptop. Worked fine, and device manager on that
computer showed exactly the same USB controllers: 1x Enhanced USB 2 and 3x
"regular" USB controllers. Had the same Intel 82801-chipset.

So, it seems you are, unfortunately, quite right in saying that this is a
hardware issue. And what's even more unfortunate is that the porblem is
widespread; I've been reading different newsgroups for the past couple of
days and the same "non hi speed" issue bothers different type of devices
plugged into the computer.

If anyone has ideas or further knowledge on the issue, please reply!

Regards,
Nic

"Pavel A." wrote:

> Hi Nic,
> I have same model (T41). It has *only* USB 2.0 controllers; the USB 1 controllers
> visible in device manager are actually pseudo creatures for supporting 1.1 devices
> (to skip all the gory details..)
> So there is some electrical problem - hopefully, in the cable, not in the disk drive.
> If the obvious measures (checking all cables, tightening all connectors) do not help,
> it's the time to call nearest Lenovo clinic (-_-) and make appointment with a computer physician.
>
> Regards,
> --PA
>
> "Nic" <Nic@discussions.microsoft.com> wrote in message news:6190A13F-42DE-4226-BB80-BEE35A24B804@microsoft.com...
> >
> > "Pavel A." wrote:
> >
> >> Do you have two (or more) USB controllers, one of them USB 2 and others USB 1?
> >> Do you use any hubs, cables or plug directly into USB ports on the
> >> motherboard?
> >>
> >> --PA
> >
> > I have exactly the same problem as KHB.
> > I'm on a IBM T41 Thinkpad laptop, with WinXP Pro SP2 and Lacie P3 250Gb
> > External HDD. Sent my Lacie for repair, came back unchanged, so shouldn't be
> > a hardware problem.
> >
> > Anyhow, I have 4 USB controller,
> > 1x "Intel 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD", and
> > 3x "Intel 82801DB/DBM USB Universal Host Controller 24C2/24C4/24C7"
> >
> > Like KHB explains, the doesn't seem to connect as USB 2.0, but rather as a
> > USB 1.1. device. At times, which I can only describe as random occurances, I
> > get the HDD connected as 2.0 Hi Speed device, but it may abruptly (even
> > during file transfer) disconnect and immediately reconnect again, but as a
> > USB 1.1. device and with the error message KHB described.
> >
> > As I'm on a laptop, I only have two USB connectors available, don't know how
> > they are wired to the motherboard.
> >
> > Nic
>
>
>

did you ever fix your problem? I am having exactly the same issue on a T41.

Thanks in advance

"Nic" wrote:

> Hi again,
>
> been testing the whole shebang back and forth;
> plugged the HDD to a HP laptop. Worked fine, and device manager on that
> computer showed exactly the same USB controllers: 1x Enhanced USB 2 and 3x
> "regular" USB controllers. Had the same Intel 82801-chipset.
>
> So, it seems you are, unfortunately, quite right in saying that this is a
> hardware issue. And what's even more unfortunate is that the porblem is
> widespread; I've been reading different newsgroups for the past couple of
> days and the same "non hi speed" issue bothers different type of devices
> plugged into the computer.
>
> If anyone has ideas or further knowledge on the issue, please reply!
>
> Regards,
> Nic
>
> "Pavel A." wrote:
>
> > Hi Nic,
> > I have same model (T41). It has *only* USB 2.0 controllers; the USB 1 controllers
> > visible in device manager are actually pseudo creatures for supporting 1.1 devices
> > (to skip all the gory details..)
> > So there is some electrical problem - hopefully, in the cable, not in the disk drive.
> > If the obvious measures (checking all cables, tightening all connectors) do not help,
> > it's the time to call nearest Lenovo clinic (-_-) and make appointment with a computer physician.
> >
> > Regards,
> > --PA
> >
> > "Nic" <Nic@discussions.microsoft.com> wrote in message news:6190A13F-42DE-4226-BB80-BEE35A24B804@microsoft.com...
> > >
> > > "Pavel A." wrote:
> > >
> > >> Do you have two (or more) USB controllers, one of them USB 2 and others USB 1?
> > >> Do you use any hubs, cables or plug directly into USB ports on the
> > >> motherboard?
> > >>
> > >> --PA
> > >
> > > I have exactly the same problem as KHB.
> > > I'm on a IBM T41 Thinkpad laptop, with WinXP Pro SP2 and Lacie P3 250Gb
> > > External HDD. Sent my Lacie for repair, came back unchanged, so shouldn't be
> > > a hardware problem.
> > >
> > > Anyhow, I have 4 USB controller,
> > > 1x "Intel 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD", and
> > > 3x "Intel 82801DB/DBM USB Universal Host Controller 24C2/24C4/24C7"
> > >
> > > Like KHB explains, the doesn't seem to connect as USB 2.0, but rather as a
> > > USB 1.1. device. At times, which I can only describe as random occurances, I
> > > get the HDD connected as 2.0 Hi Speed device, but it may abruptly (even
> > > during file transfer) disconnect and immediately reconnect again, but as a
> > > USB 1.1. device and with the error message KHB described.
> > >
> > > As I'm on a laptop, I only have two USB connectors available, don't know how
> > > they are wired to the motherboard.
> > >
> > > Nic
> >
> >
> >