Logitech K540e Wireless Keyboard and M705 Wireless Mouse W/Dongle & Batteries

Logitech K540 Advanced Wireless Keyboard WITH Unifying Receiver Included

Logitech K540 Advanced Full Size Wireless Desktop Keyboard NO Unifying Receiver

Logitech K540 Wireless ITALIAN LAYOUT Keyboard MK540 - (No Unifying Dongle)

Logitech K540 Unifying Silent Keyboard Black

Logitech K540 Unifying Wireless Keyboard Matte Black NO DONGLE

Logitech K540 Advanced Full Size Wireless Desktop Keyboard W/Unifying Receiver

Logitech K540 Wireless Desktop Keyboard w/ USB Unifying Dongle