The Genuine Apple 40W Dynamic Power Adapter is a white power adapter specifically designed for Apple MacBook Pro and MacBook Air models. With a voltage range of 20V to 15V and an output current of 3.2A, this OEM sealed adapter is compatible with various Apple models such as A1398 and A1181. The adapter is also suitable for universal use, making it versatile for different brands and models. Made in China, this authentic Apple product ensures reliable power delivery for your MacBook devices.