Plug & Play Our wireless keyboard and mouse are easy to use. Just plug the USB dongle into your computer's USB port and install the batteries. This wireless keyboard and mouse is perfect for connecting any device. There is only one USB DONGLE to connect the keyboard and mouse. The USB dongle is located inside the battery compartment of the keyboard. Highly Compatible We recommend it for Apple iMac and Macbook. It is designed with macOS users in mind. Our wireless keyboard and mouse are also compatible with Windows computers or Android tablets and TV boxes. iMac Model: A1244 A1225 A1311 A1312 A1418 A1419 A1862 Macbook Model: 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 other products? We have designed this keyboard and mouse based on your habits, quality requirements, and price expectations. It can replace the keyboard and mouse you are using. (1) macOS dedicated keys, also compatible with Windows and Android, (2) the keyboard and mouse click life is super long. Long Working Time Our wireless keyboard and mouse are designed to be energy efficient. 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 use an automatic power-saving function, which can automatically turn 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 a delayed response from the keyboard and mouse. This function is to save power.