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
Amazon.com: Logitech MK345 Wireless Combo Full-Sized Keyboard with Palm Rest and Comfortable Right-Handed Mouse, 2.4 GHz Wireless USB Receiver, Compatible with PC, Laptop : Everything Else
Genuine Tiny Unifying Usb Receiver Dongle For Logitech Mouse And Keyboard Can Connect Up To Six (6) Devices W/ Unifying Logo - Keyboards - AliExpress
Unifying Receiver Dongle for Logitech Keyboard And Mouse Six Compatible | eBay
Logitech K350 Wireless Keyboard, USB Unifying Receiver, Black LOG920001996
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
Logitech Unifying receiver - Wikipedia
Logitech MK365 Keyboard and Mouse Combo 2.4GHz 1000DPI Unifying Receiver USB RF Wireless Ergonomical -Black,Black/Red,Black/Silver - Newegg.com
Logitech Slim Wireless Keyboard and Mouse Combo - Low Profile Compact Layout, Ultra Quiet Operation, 2.4 GHz USB Receiver with Plug and Play Connectivity, Long Battery Life, Graphite - Walmart.com
Logitech Keyboard, Mouse & Receiver Set for Sale in Garden Grove, CA - OfferUp
Logitech MK545 Advanced Wireless Keyboard and Mouse Combo