The Western Digital WD Black P10 4TB External Hard Drive is a high-capacity portable external HDD designed for use with PCs. With a sleek black color and a 2.5-inch form factor, this hard drive offers fast data transfer speeds through its USB 3.0 interface. It is powered by a 5400 RPM rotation speed and features a USB port for easy connectivity. This new, sealed product from Western Digital is ideal for those seeking reliable and secure storage options for their computer and other digital devices.