For Logitech K800,K750,K710,K700,K520,K400,360 Unifying NANO USB Dongle/Receiver
Compatible with K800,K750,K710,K700,K520,K400,K360,K350,K340 Original USA. Only compatible with Logitech mouse and keyboard that have a unifying logo. Download Unifying software to quickly add all of your devices to one receiver.