Logitech's USB Unifying Receiver: one dongle to serve multiple input peripherals | Engadget
Logitech Unifying Usb Receiver Dongle 6 Devices Performance Keyboard Mouse New - Instrument Parts & Accessories - AliExpress
Amazon.com: Logitech USB Unifying Receiver, 2.4 GHz Wireless Technology, USB Plug Compatible with all Logitech Unifying Devices like Wireless Mouse and Keyboard, PC / Mac / Laptop - Black : Electronics
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