Occassion failure of USB ports

Hi, am new here so sorry if this question has been asked before (although I did do a search but don't have the answer I want)
Have been having my MBP for a year now, I use a Logitech wireless mouse that hooked to the usb port.
From time to time the mouse just have no response - it's not the battery as I changed it ... and it usually work again if I changed to another USB port. But sometimes after a while the 2nd USB port failed as well.
So I thought it has something to with the mouse. Hmm not really.
Bought the wired Apple Keyboard few weeks ago, so I hooked it to the usb and hooked the mouse to the keyboard's usb port. The same thing happened -- from time to time (i said once every two weeks??), the usb port just suddenly refuse to response (well, at least the keyboard and mouse not responding). Change to another one may work, but sometimes may not. Usually have to restart the OS again. Hey I thought I am using a Mac, not Window ...
So any clue? Thanks

Thanks, so how do I achieve it? And what is causing this problem?
Thank you very much

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