Western Digital My Passport 4TB portable external hard drive in black. USB 3.0 with backward compatibility for USB 2.0 ports. Bus-powered – no wall adapter needed. Includes built-in 256-bit AES hardware encryption and password protection.Used once to back up files – essentially like new condition. USB cable included. Compact enough to slip in a pocket or bag. Works with PC and Mac.Drive has been wiped and is ready to use.