Thanks for the reply and your information.
I've "Googled" and "Googled" trying to find some way to identify the USB connections of specific devices, but to no avail.
I've been told that Windows XP Device Manager should identify devices as USB 2 but they don't show up on my system that way.
I know all of my USB ports are USB 2 and that they are enabled, so I don't know if this the Device Manager hint is fact or speculation.
Anyway, I appreciate your time and effort.