You either have a bad mouse or a bad MB. To isolate, try a Logitech USB mouse, and try your mouse in a few different USB ports.
10d
Logitech Clears Out the M185 Wireless Mouse at Its Lowest Price, Bringing It Back to the $10 Range
The Logitech M185 wireless mouse is a low-profile, light mouse that connects to your PC via a small USB receiver. The battery ...
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