The Western Digital My Book 3TB external hard drive is a versatile storage solution compatible with both PC and Mac systems. With a sleek black design and a storage capacity of 3TB, this 3.5-inch drive offers ample space for storing large files and data. The 5400 RPM rotation speed ensures faster data transfer, while the USB interface allows for easy connectivity. At 6.7 inches in height and 5.5 inches in width, this My Book model is a reliable choice for expanding storage capacity in your computing devices.