eBay

Description:

High quality and brand new
Convenient, reliable connection 2.4 GHz wireless technology
Let you connect up to six compatible mice and keyboards to one receiver
Download Unifying software to quickly add all of your devices to one receiver
Brand: Logitech
Compatible with K800,K750,K710,K700,K520,K400,K360,K350,K340 Original USA

Important:

Only compatible with Logitech mouse and keyboard that have a unifying logo
When you receive the new receiver, You must pair the new receiver to your mouse/keyboard
Please make sure that you have the unifying software downloaded
NOT compatible to 3.0 USB port

Package Includes:

1 * unifying receiver