Western Digital My Book Essential 4TB

WDBACW0040HBK-AESN

Put your digital life on the high capacity My Book Essential external hard drive. Designed to last with both WDquality and reliability plus USB 3.0 connectivity for next-generation speed.

Product Description

• Dual USB 3.0 and USB 2.0 compatibility
  
• Up to 3x faster transfer rates than USB2 models
  
• WD SmartWare software
  
• Automatic, continuous backup
  
• WD quality inside and out
  
• Password protection and encryption
  
• Planet friendly
  
• Interface: Dual Compatibility (USB 3.0 and USB 2.0)
• Compatibility: Formatted NTFS, Windows XP, Windows Vista, Windows 7, Requires reformatting for Mac OS X Leopard, Snow Leopard
  
• Package Contents: External hard drive, WD SmartWare software, USB cable, Quick Install Guide

Product Specifications
	Interface	USB 3.0 and USB 2.0

Performance Specifications
Serial Transfer Rate
	USB 3.0
	Serial Bus Transfer Rate (USB 3.0)	5 Gb/s (Max)

	USB 2.0
	Serial Bus Transfer Rate (USB 2.0)	480 Mb/s (Max)

Physical Specifications
	Capacity	4 TB

Physical Dimensions
English
	Height	6.50 Inches
	Depth	5.3 Inches
	Width	1.9 Inches
	Weight	2.60 Pounds

Metric
	Height	165 mm
	Depth	135 mm
	Width	48.0 mm
	Weight	1.18 kg

Environmental Specifications
Temperature (English)
	Operating	41° F to 95° F
	Non-operating	-4° F to 149° F

Temperature (Metric)
	Operating	5°C to 35°C
	Non-operating	-20°C to 65°C

Electrical Specifications
Current Requirements
	Power Dissipation
	AC Input Voltage	100-240 VAC
	AC Input Frequency	47-63 Hz

Compatibility
Operating System
	Compatibility	Windows/Mac