Connection Type: Logitech Unifying protocol (2.4GHz) Special Keys: Mute, Volume Down, Volume Up Connect / Power: On/Off Switch Battery Details: 2 x AA... | By Royale Computers & Accessories | Facebook
Logitech K270 Wireless Keyboard with Unifying Receiver
Logitech Unifying receiver - Wikipedia
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
How to pair a mouse with a non-unifying receiver that's not Logitech - Quora
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 monitoring – Imablog
Logitech K400+ Wireless Touch Keyboard With Multi Touch Touchpad, Logitech Unifying protocol (2.4GHz), 2 x AA Battery, Retail Box , 1 year Limited warranty.