WD My Book 4TB 3.5" External Hard Drive (WDBFJK0040HBK-NESN) - Black

Back up your critical files before it's too late. The WD My Book 4TB hard drive boasts a USB 3.0 interface for blazing-fast transfer rates, and password protection with hardware encryption to keep your information secure. With automatic backup, cloud backup and system level backup, this hard drive is a simple solution for protecting all your data.