Features

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General
Sales Package Portable Hard Drive, USB 3.0 Cable, Quick Install Guide  1 Portable SSD, Type-C Cable (18 inch), Type-C to Type-A View More... USB Data Cable 
Model Name WDBS4B0020BWT-WESN  STCM500401  Storejet 25H3 
Type HDD  SSD  HDD 
Capacity 2 TB  500 GB  4 TB 
Color White  Grey, Black  Purple 
System Requirements Windows 7, Windows 8, Windows 8.1, Windows 10  Windows 7 or Higher, Mac OS X 10.9 or Higher  MicroSoft Windows 7/8/8.1/10/ Mac OS X 10.7 or Later /LinView More...
Form Factor Portable  Portable  Portable 
Wired|Wireless Wired  Wired 
Cloud Backup No  No  No 
Additional Features
Number of Ports 1  1 
Connector Type Micro USB to USB Type A 
Data Transfer Rate 5 GB/s  500  5Gb/s 
Shock Resistant Yes Yes
Backward Compatible Yes Yes
Password Protection Yes Yes Yes
Other Features Designed to Fit in the Palm, Back Up Automatically, Easy View More... Sleek, Stylish and Ultra-modern Design, Lightweight and SView More... 256-bit AES file & folder encryption, Military-grade shocView More...
Rotational Speed 5400 RPM 
Water Resistant No  No 
Encryption Built-in 256-bit AES Hardware Encryption with WD SecurityView More... 256 
Case Material Plastic  Rubber 
Disk Buffer 8 
Power Features
Power Source USB Powered 
External Power Required No  No  No 
Dimensions
Width 81.5 mm  79 mm 
Height 110 mm 
Depth 13.8 mm  9 mm 
Weight 170 g  82 g  298 g 
Other Dimensions Length: 94 mm  5.19" x 3.18" x 0.96" 
Warranty
Warranty Summary 3 Years Worldwide Warranty  3 Years  By Manufactured 
Warranty Service Type Carry In  Carry In  Carry in Service Center 
Covered in Warranty Manufacturing Defects  Manufacturing Defects  Portable Hard Drive 
Not Covered in Warranty Physical Damages  Physical Damage  Physically Damaged Or Burnt 
Domestic Warranty 3 Year  3 Year  1 Year