After searching for a couple of weeks, I was beginning to suspect what
the author is stating in this article about the difficult in getting my
Intel 845ept2 motherboard to accept USB 2.0 drivers - Adaptec's or
Microsoft's. I had not thought to try my new 1510 printer/scanner to
see if all of the diagnostics had been wrong (neither did this guy
though). I have read a ton of articles on the problem and had tried out
all of the suggestions that I could understand to no avail. Here are a
couple of quotes from the article and the link. I hope it does someone
else some good before they spend a couple of weeks banging their head
against the wall :-)

http://www.windowsitpro.com/Article/...063/27063.html

"After installing XP with SP1, I brought up Device Manager. Sure
enough, Device Manager reported only one USB 2.0 Enhanced Host
Controller and three standard USB Universal Host Controllers. When I
checked the drivers associated with the controllers, only the first USB
port appeared to have the USB 2.0 driver. I then tried to upgrade the
software on the other controllers, but without success-the Driver
update wizard reported that the controllers had the most current
driver.

My next step was to call Microsoft Technical Support. The support team
had never before seen the problem with USB 2.0 port identification, but
a customer service rep got back to me within 24 hours with the solution
to the problem-or, as it turned out, the non-problem. The problem
wasn't caused by the availability of USB 2.0 ports, but by the way that
Intel has designed the USB controller. Basically, my computer has one
USB 2.0 controller and three (or five, if you enable all the ports) USB
companion controllers that report themselves as USB 1.1 devices. If you
plug a USB 2.0 device into any port, the device functions at USB 2.0
speeds; the controller handles the logic internally. USB controllers
from different vendors might not report ports in the same way and might
not indicate that all the ports are USB 2.0 capable, but each should
have the same functionality.

I've already filled six of the seven ports with a USB hard disk,
digital camera, MP3 player, Compact Flash reader, USB Bluetooth
transceiver, and the USB connection to my satellite Internet
connection. I use the seventh port occasionally for a USB flash memory
card I use to transfer files-my digital video camera uses an IEEE
1394 (aka FireWire) connection."