PLUG AND PLAY: Our wireless keyboard and mouse are easy to use. Simply plug the USB dongle into your computer's USB port and install the batteries. This wireless keyboard and mouse is best used for connecting to all. There is ONLY ONE USB DONGLE to connect to the keyboard with the mouse. The USB dongle is located in the battery compartment of the keyboard. HIGHLY COMPATIBLE: We recommend it for Apple iMac and Macbook, as it is designed based on macOS user habits. 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'S DIFFERENT FROM OTHERS: We designed this keyboard and mouse based on your habits, quality requirements, and price expectations. It's ready to replace the keyboard and mouse you're currently using. (1) Special keys for macOS and also compatible with Windows and Android, (2) Super long lifespan for keyboard and mouse clicks. WORK LONGER: 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. Batteries are not included. Important Tip: This keyboard and mouse use automatic power-saving technology, which may turn off automatically after 30 seconds of inactivity. There is no power switch to turn it on/off manually. Simply press any key to wake it up. This is NOT a keyboard and mouse DELAY IN RESPONDING. This feature is designed to save power.