Always have your files on hand with the black WD 4TB My Passport USB 3.1 Gen 1 External Hard Drive. Designed with a slim form factor, it's also available in a variety of colors to suit your style. Aside from its 4TB of storage capacity, it's built with 256-bit AES hardware encryption to help ensure your files are protected, and features USB 3.1Gen 1 connectivity for fast transfers. It and comes formatted NTFS for Windows 8.1 and 10, but may be reformatted for other operating systems, and connects to your host system using an included micro-USB to USB Type-A cable. Users can take advantage of WD's Discovery and Backup software to help manage and back up their files as well. Make the most of your journey with style that suits you. The My Passport has been redesigned to feature a convenient, slim form factor and is available in a range of vibrant colors. Make sure everything you create while on your own life journey - photos, videos, music, and documents - doesn't get lost. The My Passport drive comes equipped with WD Backup software that can be set to run automatically to your schedule. Just pick the time and frequency to back up important files from your system onto your My Passport drive. Keep your digital life's contents secure with My Passport password protection and built-in 256-bit AES hardware encryption. Just activate password protection and set your own personalized password using WD Discovery. My Passport portable storage is ready right out of the box, including all necessary cables. And with USB, you can quickly start backing up everything in your life and keep driving forward. Included WD Discovery software lets you connect to popular social media and cloud storage services like Facebook, Dropbox, and Google Drive. Seamlessly import, organize, and share your photos, videos, and docs to the My Passport drive to backup your online social life. WD Discovery can also manage your drive through WD Drive Utilities.