Pair up to 6 compatible devices---Plug in the Dell Universal Pairing Receiver to your PC and connect up to six different compatible keyboards and mice. Now you can switch between devices without needing multiple receivers. All keyboards and mice with the Dell Universal pairing icon can be paired with the Dell Universal Pairing Receiver. Enjoy the convenience of leaving your keyboard and mouse set at home and another mouse in the office without having to carry them around. Manage your devices easily--Pairing the compatible keyboards and mice with your universal wireless receiver is easy. Compatibility--KM7321W-MS7421W-KM5221W-MS3320W-MS5120W-MS5320W-KM7120W-KM636-WM126-KM717-WM527-WM514-WM326-WK717-KM714