Wireless Dongle Receiver USB Adapter For Logitech Unifying Mouse Keyboard Connect 6 Device For M905 M950 M505 M510 M525 Z3F0 - AliExpress
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
Wireless Receiver Setup for Keyboard | Logitech Support
Logitech Unifying Receiver for Connecting Multiple Devices
Logitech's new Mac-specific mouse and keyboards are the new best choices for Mac input devices | TechCrunch
Logitech MK120 Wired Keyboard and Mouse Combo for Windows, Optical Wired Mouse, Full-Size Keyboard, USB Plug-and-Play, Compatible with PC, Laptop - Black - Newegg.com