Thinkwiki says
its got a QM67. That does USB 1.1 via the "Rate
matching hub" and EHCI.
I guess linux's hub driver is the culprit.
hmmmm.... shame.... lenovo specs said, of course, "USB 2.0".
mrph.
That is USB 2. It doing USB1.1 protocol through a USB2 transaction
translator (as your device is USB1.1). Good thing too, or you'd be
stuck on UHCI.
Monty