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Cheap Microsoft Bluetooth Notebook Mouse 5000 Mac/Windows: This is the Microsoft’s most portable wireless notebook mouse that connects directly to a Bluetooth PC without a transceiver, freeing up USB ports for other devices.

Enjoy wireless freedom with the Microsoft® Bluetooth® Notebook Mouse 5000 — no transceiver to connect or lose! Keep USB ports free for other devices. And, take it with you in a convenient carrying case…

Source: Cheap Microsoft Bluetooth Notebook Mouse 5000 Mac/Windows