From Logitech:With Logitech Unifying Software you will get the convenience of one tiny receiver you can leave in your computer and reduce the number of USB ports you use with your Logitech Unifying receiver.You no longer need a different receiver for each device. When you leave the tiny Unifying receiver in your notebook computer, your wireless devices can be instantly ready to use with your computer as soon as you’re there. There’s no hassle of plugging and unplugging receivers. For example, you may have a keyboard and mouse at home, another keyboard and mouse at work, and a mobile mouse when you’re on the road and they’ll all be ready for you.
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