Genuine Logitech Unifying Receiver-Wireless Mouse/Keyboard USB Dongle-6 Devices | eBay
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Logitech MK470 Slim Wireless Keyboard & Mouse Combo - Nano Logitech Unifying receiver, 2.4GHz, up to 33ft, Numeric keypad, 3 Buttons, Optical, 1000DPI, Plug & Play, Off White - 920-009443 at TigerDirect.com
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Logitech Unifying receiver - Wikipedia
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