PLUG AND PLAY Our wireless keyboard and mouse are easy to use. Just plug the USB dongle into the USB port of your computer and install the batteries. This wireless keyboard and mouse is perfect for connecting to all your devices. There is ONLY ONE USB DONGLE to connect the keyboard and mouse. The USB dongle is located in the battery compartment of the keyboard. HIGH COMPATIBILITY We recommend it for Apple iMac and Macbook. It is designed with macOS users' needs in mind. Our wireless keyboard and mouse are also compatible with Windows computers or Android tablets and TV boxes. iMac models: A1244 A1225 A1311 A1312 A1418 A1419 A1862 Macbook models: A1424 A1398 A1435 A1436 A1502 A1425 A1465 A1343, A1174, A1290, A1222, A1172 A1181, A1184, A1224 , A1172, A1278,A1330,A1342, A1344 etc. WHAT IS DIFFERENT FROM OTHERS We have designed this keyboard and mouse based on your habits, quality requirements and price expectations. It is ready to replace the keyboard and mouse you are using. (1) Special keys for macOS and also compatible with Windows and Android, (2) Super long life for keyboard and mouse clicks. WORK LONG Our wireless keyboard and mouse are designed to save energy. The keyboard uses two AAA batteries and the mouse uses one AA battery. They can last up to 6 months. The package does not include batteries. Important tips This keyboard and mouse use automatic power saving technology that can turn itself off after 30 seconds of inactivity. It does not have a power switch for manual on/off function. Just press any key to wake it up. This is NOT the keyboard and mouse with DELAYED RESPONSE TIME. This feature is to save power._CASA