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Logitech Unifying Receiver for Connecting Multiple Devices
Zone Wireless Plus Unifying + Audio Receiver
Logitech M510 Wireless Mouse, 2.4 GHz with USB Unifying Receiver, 1000 DPI Laser-Grade Tracking, 7-Buttons, 24-Months Battery Life, PC / Mac / Laptop (Black)
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How to Connect a Logitech Wireless Mouse to a Unifying Receiver