USB 2.0 Scanner on USB 1.1 System (XP): recognized, but does not work

J

Jörg Pötzsch

I run a Sony Vaio PC (Win XP, SP1) with several USB 1.1 devices attached.
All fine.
Now I tried to install a Plustek ST48 USB 2.0 Scanner. During set up, XP
gives me a message saying that the USB-device is a high speed device, but
will work, though at lower speed. Unfortunatley, it does not. In the device
manager, everything looks well, no exclamation signs, and the scanner is
listed as functional. Downloaded the newest drivers from Plustek. Installed.
No change. Twain cannot connect to the scanner. To make sure, the Scanner
has enough power, I disconnected all other USB-devices from the machine. No
change. I tried every and each USB-Port at the Machine, with and wihout
hubs. No change.

To exclude that the Scanner or the cable is faulty, I installed the scanner
at a Toshiba Laptop (USB 1.1, Win 200o Pro): it works fine, but very slow
(old machine, little memory). But the scanner itself is ok.

Talked to the guys at both hotlines: Sony and Plustek: both have no clue (as
usual), and point with their fingers to each other.

Now I arrived at the end of my latin. Except installing a USB 2.0 port. I
would want to avoid that, because I use the scanner only for scanning my
24x36 mm slides, when this job is done, I will sell it again, because I do
have an all-in-one HP in my network which has regular scanning capacity.

Almost hopeless, but still: has any of the freaks any clue?
Thanks.
 
Y

Yves Leclerc

You can try to buy a "powered" USB hub. These type of hubs allow to
connecting of more USB drives and with the extra power that it supplies, it
could help the scanner to work.

Y.
 
K

Kurt

I am having the EXACT same problem with a new PNY Attache
USB 2.0 128Mb Flash Memory stick. I can't find
alternative drivers and the company has not answered my
email yet. Funny thing is the device does work on my
laptop and my office PC, just not on my home computer
which is where I would use it most, unfortunately. I
have an older USB 1.1 PNY Attache 64Mb Flash Drive which
has always worked fine. I'm heading over to Kelly's XP
Corner next to see if I can solve this.
 

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