Welcome to our store! - This USB adapter is designed to help you save your USB port when it's too small. - It is specifically designed to connect mouse or keyboard devices and cannot be used with other devices. - Please note that this adapter may not be compatible with all motherboard types, as it is only designed to work with generic mouse and keyboard devices. - To use the adapter, please follow these steps: 1. Turn off your computer. 2. Connect the adapter and plug in your mouse or keyboard. 3. Turn on your computer and start working. - 100% Satisfaction Guarantee: Our customers are our top priority. If you find any product issues after receiving the goods, such as damage and incorrect quantity, please contact the seller immediately. We do our best to provide you with satisfactory customer service. Make sure to connect the adapter when the computer is not working.