Solaar is a graphical Python program that integrates in your system tray and allows you to configure additional features of your input device such as swapping the functionality of Fn keys. Ltunify is a command-line C program that can perform pairing, unpairing and listing of devices. Pairing and unpairing on Linux is supported by a number of tools, listed thereafter: Logitech officially supports pairing of additional devices just through their Windows and macOS software. The input device that comes with the receiver is already paired with it and should work out of the box through plug and play. The Logitech Unifying Receiver is a wireless receiver using 2.4 GHz band radio communication that can connect up to six compatible wireless mice and keyboards to your computer.