The WD Elements Portable 1TB is an external hard drive with a storage capacity of 1TB for all your files. This compact 2.5-inch hard drive is easy to take with you, and the fact that it's powered via the USB port makes it even more mobile. The drive can be connected with USB 3.0. If your computer doesn't support USB 3.0, the drive will use USB 2.0. The WD Elements Portable 1TB has been formatted for Windows computers, which means it can be used straight out of the box.