Amazon.com: Logitech 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
Logitech K360 Compact Wireless Keyboard with Hotkeys
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Logitech 820-004554 K360 Black Wireless Keyboard w/ USB Unifying Receiver Dongle | eBay