Western Digital WD My Book 4TB USB 3.0 Desktop External Hard DriveModel: WDBFJK0040HBK (Book-Style Enclosure) | Condition: Brand New & Factory Sealed (Original Outer Shrinkwrap Intact) Item Overview

Up for sale is a genuine, brand-new and factory-sealed Western Digital My Book 4TB Desktop External Hard Drive. Encased in WD's classic matte black book-style enclosure, this high-capacity drive offers reliable, high-speed storage engineered for complete automated system backups, massive photo and video libraries, and local data archiving.

Featuring hardware-based 256-bit AES encryption with password protection and USB 3.0 plug-and-play capability, it keeps personal data secure and easily accessible.

Technical data-path-to-node="8,1,1,0" id="p-rc_44ab67d3951fc996-111" style="line-height: 1.15 !important; margin: 0px !important;">Western Digital (WD)

Product Line

WD My Book (Premium Storage)

Model / Part NumberWDBFJK0040HBK-NESNTotal Capacity

4TB (4,000 GB)

Drive Form Factor3.5-Inch Internal SATA Desktop DriveHost InterfaceSuperSpeed USB 3.0 (USB 2.0 backward compatible)Transfer RateUp to 5 Gb/s (via USB 3.0)SecurityHardware 256-bit AES Encryption + Password ProtectionFactory File SystemPre-formatted NTFS for Windows (Easily reformatted for macOS / Time Machine)Power SupplyAC Power Adapter (Included in factory seal)DimensionsApprox. 6.7" H x 5.5" D x 1.9" WKey Features & Highlights

• Massive 4TB Capacity: Plenty of room for hundreds of thousands of high-res photos, 4K home videos, lossless music collections, and multi-version OS backup images.

• Complete Backup & Security: Compatible with WD SmartWare Pro / WD Backup software and Apple Time Machine (requires quick Mac reformat) for continuous, hands-off local backups.

• Hardware Data Encryption: Integrated 256-bit AES hardware encryption pairs with WD Security software to ensure sensitive files stay protected from unauthorized access.

• Classic Book Enclosure Design: Vertical desktop form factor takes up minimal desk footprint while maintaining efficient passive convection cooling.

• Factory Sealed Retail Unit: 100% untouched in original clear plastic shrinkwrap with perfect box structure—ideal for gift giving or archiving.

Package Contents (All Factory Sealed Inside)

• 1x WD My Book 4TB Desktop External Hard Drive (Model: WDBFJK0040HBK)

• 1x SuperSpeed USB 3.0 Cable

• 1x AC Power Supply Adapter with Wall Plug

• Quick Install Guide / Setup Documentation

Shipping & Protection

• Fast Dispatch: Ships within 1 business day with verified online tracking.

• Collector-Grade Packaging: Shipped double-boxed inside sturdy corrugated cardboard with generous bubble cushioning to keep the factory seal and box edges intact during transit.

• Compatibility Check: Formatted NTFS for Windows 10/11 out of the box; can be reformatted to exFAT or APFS/HFS+ in seconds for Apple macOS compatibility.