USB 3.0 - 256-bit Encryption Standard - 3 Year Warranty - Retail General Information Manufacturer: Western Digital Corporation Manufacturer Part Number: WDBBGB0040HBK-NESN Brand Name: WD Product Line: My Book Product Model: WDBBGB0040HBK Product Name: My Book 4TB Desktop Hard Drive Marketing Information: Complete BackupMy Book desktop storage comes equipped with WD Backup software and Apple Time Machine compatibility to help make sure your photos, videos, music and documents don't get lost. You can set it to run automatically to your schedule. Just pick the time and frequency to back up important files from your system.My Book desktop storage also works great with Acronis True Image WD Edition software to schedule complete system backups.With the power of WD Backup, Apple Time Machine compatibility and Acronis True Image WD Edition software, you've got a complete backup routine to help recover data in the event of a computer virus, computer failure, or if you accidentally press "delete". Password Protection with Hardware EncryptionThe My Book drive's built-in 256-bit AES hardware encryption with WD Security software helps keep your content private and safe. Just activate password protection and set your own personalized password.For quick, convenient access, you can set WD Security to automatically unlock the drive on your computer, saving you the hassle of keying in your password every time. Reimagined Design The bold, vibrant design of My Book desktop storage is sure to stop you in your tracks. It is desktop storage reimagined and gives you the opportunity to express yourself! Easy to UseMy Book desktop storage is ready to use out of the box so you can start transferring files, saving your memories and backing up right away. It comes with all the software you need to help protect your data, including WD Backup and WD Security software and is compatible with Apple Time Machine. Package Type: Retail Product Type: Hard Drive Technical Information Storage Capacity: 4 TB Encryption Standard: 256-bit Interfaces/Ports Host Interface: USB 3.0 Physical Characteristics Product Color: Black Drive Type: External External Drive Type: Desktop Height: 6.7" Width: 1.9" Depth: 5.5" Weight (Approximate): 2.20 lb Miscellaneous Package Contents: My Book 4TB Desktop Hard Drive USB 3.0 cable AC Adapter WD Backup WD Security and WD Drive Utilities Software Quick Install Guide Environmentally Friendly: Yes Environmental Certification: RoHS Device Supported: Storage System Country of Origin: Thailand Warranty Limited Warranty: 3 Year