My Chromebook only has one USB port, so I need it to power an extra keyboard, mouse and USB drive at the same time. Works very well after several months of daily use. I suspect that one of the ports is not working with my mouse. But the mouse works great with everyone else. This ultimately solved my problem, was cheap, and worked well for a long time. I've only disconnected and reconnected it twice to wake it up (I'm guessing because I moved the computer or something). never mind
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