Features

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General
Sales Package Storejet 25M3, Quick Start Guide, USB Cable  Portable Hard Drive, USB 3.0 Cable, Quick Install Guide  Portable Hard Drive, USB 3.0 Cable, Quick Install Guide  My Passport Hard Drive, USB 3.0 Cable, WD Backup, WD Secu View More...
Model Name StoreJet 25M3  WDBHDW0040BBK-EESN  WDBS4B0020BWT-WESN  My Passport
Type HDD  HDD  HDD  HDD
Capacity 2 TB  4 TB  2 TB  1 TB
Color Iron Gray  Black  White  Red
System Requirements Windows 7 /8/8.1/10, Mac OS X 10.7 or later, Linux KernelView More... Windows 7, Windows 8, Windows 8.1, Windows 10  Windows 7, Windows 8, Windows 8.1, Windows 10  Formatted for Windows 7, Windows 8, Windows 10, Requires  View More...
Form Factor Portable  Portable  Portable  Portable
Wired|Wireless Wired  Wired  Wired
Cloud Backup No  No  No 
Additional Features
Number of Ports 1 
Connector Type Micro B 
Data Transfer Rate USB 3.0 -5gb/S  5 GB/s  5 GB/s  USB 2.0: 480 Mb/s, USB 3.0: 5 Gb/s
Shock Resistant Yes Yes
Backward Compatible Yes
Password Protection Yes Yes Yes
Other Features Quick Reconnect Button - safely re-enable the removed harView More... Lightweight  Designed to Fit in the Palm, Back Up Automatically, Easy View More...
Rotational Speed 5400 RPM 
Water Resistant No 
Encryption 256-bit AES file & folder encryption  Built-in 256-bit AES Hardware Encryption with WD SecurityView More... Yes
Case Material Rubber 
Power Features
External Power Required No  No  No  No
Power Requirement USB DC 5V 
Dimensions
Width 8 mm  82 mm  81.5 mm  37 mm
Height 129 mm  110.5 mm  110 mm  9.4 mm
Depth 20.4 mm  21 mm  13.8 mm  78.2 mm
Weight 0.23 g  234 g  170 g  170 g
Warranty
Warranty Summary By Manufactured  3 Years Limited Warranty  3 Years Worldwide Warranty  2 Years + Additional 1 Year Extended Warranty
Warranty Service Type Carry In  Carry In  Carry In  3 Years Limited Warranty
Covered in Warranty StoreJet 25M3  Manufacturing Defects  Manufacturing Defects  Manufacturing Defects
Not Covered in Warranty Physically Damaged Or Burnt  Physical Damages  Physical Damages  Warranty does not cover physical damage
Domestic Warranty 3 Year  3 Year  3 Year