T60 USB Mice has random disconnect, needs to be plugged back in

We have a bunch of T60's here, and we use Lenovo USB mice with them. What happens is, at any given moment, the mouse will stop working. The user just unplugs and plugs the mouse back in (Port Rep or directly into machine). This usually works, but sometimes requires the mouse to be swapped out. Then that old mouse will work somewhere else.
It's a very weird problem, and was wondering if anyone has a solution? I did some reading up and found other people with this problem, didn't find much of a solution though.
Any help appreciated, thanks.

Try setting usb in bios - config - usb  to always on or powered and in device manager remove the tick on usb hubs allowing windows to turn them off.
Andy  ______________________________________
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