I finally gave up on a wireless keyboard and switched to the same exact model, but wired. I was getting really frustrated with holding down the shift key, sele

I finally gave up on a wireless keyboard and switched to the same exact model, but wired. I was getting really frustrated with holding down the shift key, selecting downward several paragraphs of text to work on, only to have the shift key modifier released sometime during the movement, forcing me to start over again. Repeat ad nauseum. Granted, I might have tried a different manufacturer, or even a different unit from the same manufacturer, but the gain just didn't seem worth the possible time spent.