PLUG AND PLAY: Our wireless keyboard and mouse are user-friendly. Simply connect the USB dongle to your computer's USB port and install the batteries. This wireless keyboard and mouse set is perfect for connecting to all your devices. There is ONLY ONE USB DONGLE to connect both the keyboard and mouse. The USB dongle is located in the battery compartment of the keyboard. HIGH COMPATIBILITY: We highly recommend this set for Apple iMac and Macbook users, as it's designed with macOS users in mind. Our wireless keyboard and mouse are also compatible with Windows PCs, Android tablets, and TV boxes. Compatible iMac models: A1244, A1225, A1311, A1312, A1418, A1419, A1862. Compatible 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 COMPARED TO OTHERS: We've designed this keyboard and mouse based on your usage habits, quality expectations, and price points. It's ready to replace your current keyboard and mouse. (1) Special keys for macOS, also compatible with Windows and Android. (2) Super long lifespan for keyboard and mouse clicks. WORK LONGER: Our wireless keyboard and mouse are designed for energy saving. The keyboard uses two AAA batteries, and the mouse uses one AA battery. They can last up to 6 months. Batteries are not included in the package. Important Tips: This keyboard and mouse utilize automatic power-saving technology, shutting off after 30 seconds of inactivity. There is no manual on/off switch. Simply press any key to wake it up. This feature is designed to save power and does NOT indicate a delayed response time.