Logitech K360 Advanced Wireless Compact Keyboard USB Unifying 920-004088 Black - Refurbished - Walmart.ca
LOGITECH MK330 Wireless Combo with unifying-Nano-receiver black (FRA)
Amazon.com: Logitech USB Unifying Receiver - Black : Electronics
What is Unifying? - Logitech
Logitech K750 Wireless Solar Keyboard for Windows, 2.4GHz Wireless with USB Unifying Receiver, Ultra-Thin, Compatible with PC, Laptop - Black - Newegg.com
Logitech Wireless Keyboard K340, Unifying, SLO g - Eventus Sistemi
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
K270 Wireless Keyboard with Unifying Receiver | Logitech Switzerland