WD My Book 4TB External Hard Drive Storage USB 3.0 File Backup and Storage - WDBACW0040HBK-NESN

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5 out of 5
Total Reviews
Overall Satisfaction
Ease of Use

Great Drive, great value

on 3/26/2013

This drive is exactly what it purports to be. It was ready to go right from the box. I've not used the software for computer backup, yet, but as far as performance, I've had no problems. The drive gets slightly warm, but not hot after I had 24 hours of continuous data transfer. Also, the desktop footprint is quite small. I fully recommend this product.

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Big, Easy to Use Storage

on 4/28/2013

I bought this to transfer and backup a large number of scanned documents. Simple to use and worked great from the very beginning. I'll be getting another for video and image editing.

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Product Overview

USB 3.0 and USB 2.0 compatibility.
With this single drive you get compatibility with your USB 2.0 devices today and the ultra-fast speed of USB 3.0 when you're ready to step up to the next generation.

Up to 3x faster transfer rates.
When connected to a USB 3.0 port, My Book lets you access and save files with blazing speed. Reduce transfer time by up to 3 times when compared to USB 2.0 transfer rates.

WD SmartWare software
WD SmartWare visual backup software provides a visual display of your backup as it happens so you know your data is safe.

Automatic, continuous backup software.
Backup means having a second copy of your files at all times. WD's automatic backup software makes that easy. It continually works quietly in the background to help protect your data while using minimal PC resources. Whenever you save or change a file, it's instantly backed up.

Password protection for privacy.
WD Security utility allows you to set password protection and hardware encryption for your drive to protect your files from unauthorized use or access.

WD Drive Utilities
Register your drive, set drive security, run diagnostics and more using WD Drive Utilities.

WD quality inside and out.
We know your data is important to you. So we build the drive inside to our demanding requirements for durability, shock tolerance and long-term reliability. Then we place the drive in a robust enclosure designed for beauty and protection.


Manufacturer Western Digital
SKU 241730392
UPC 718037802701
UPC 14 00718037802701
Product Guide Click Here for the Western Digital Store
Product Guide Click Here for More Hard Drive Deals!
Tech Specs
Product Specifications
Interface: USB 3.0 and USB 2.0
Performance Specifications
Serial Bus Transfer Rate (USB 3.0): 5 Gb/s (Max)
Serial Bus Transfer Rate (USB 2.0): 480 Mb/s (Max)
Physical Specifications
Capacity: 4 TB
Physical Dimensions
Height: 6.50 Inches
Depth: 5.3 Inches
Width: 1.9 Inches
Weight: 2.60 Pounds
Environmental Specifications
Operating: 41° F to 95° F
Non-operating: -4° F to 149° F
Electrical Specifications
AC Input Voltage: 100-240 VAC
AC Input Frequency: 47-63 Hz
Formatted NTFS
Windows XP, Windows Vista, Windows 7, Windows 8
Mac OS X 10.6.5 or later (requires reformatting)
Package Includes
External hard drive
WD SmartWare software (pre-loaded)
USB cable
AC adapter
Quick Install Guide

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