I am satisfied with the Unifying support; I was able to connect the mouse and keyboard (both of which are made by Logitech) to a single receiver, which freed up the USB connector. I consumed an entire battery for an entire year, and now I survive off of an old battery from a camera. There was a suspicion that the left button had been double-clicked; yet, even though double clicks are extremely uncommon, they can still happen. I purchased it for 700r with a penny, however for the price that they are asking for it today, it is not worthwhile.
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