Features

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General
Sales Package External Solid State Drive  Portable Hard Drive, USB 3.0 Cable, Quick Install Guide  Portable Hard Drive, USB 3.0 Cable, Quick Install Guide 
Model Name MU-PA500B/WW  WDBHDW0040BBK-EESN  WDBS4B0020BWT-WESN 
Type SSD  HDD  HDD 
Capacity 500 GB  4 TB  2 TB 
Color Blue  Black  White 
System Requirements Windows 7, Mac OS X 10.9 (Mavericks), Android 4.4 (KitKatView More... Windows 7, Windows 8, Windows 8.1, Windows 10  Windows 7, Windows 8, Windows 8.1, Windows 10 
Form Factor Portable  Portable  Portable 
Wired|Wireless Wired  Wired 
Cloud Backup No  No  No 
Additional Features
Connector Type USB Type-C to A 
Data Transfer Rate Upto 540 Mbps  5 GB/s  5 GB/s 
Shock Resistant Yes
Backward Compatible Yes
Password Protection Yes Yes
Other Features UASP Mode: Support, Security: Portable SSD Software, MultView More... Lightweight  Designed to Fit in the Palm, Back Up Automatically, Easy View More...
Encryption AES 256-bit Hardware Encryption  Built-in 256-bit AES Hardware Encryption with WD SecurityView More...
Power Features
External Power Required No  No 
Dimensions
Width 74 mm  82 mm  81.5 mm 
Height 57.3 mm  110.5 mm  110 mm 
Depth 10.5 mm  21 mm  13.8 mm 
Weight 51 g  234 g  170 g 
Warranty
Warranty Summary 3 Years Limited Warranty  3 Years Limited Warranty  3 Years Worldwide Warranty 
Warranty Service Type Carry In  Carry In  Carry In 
Covered in Warranty Manufacturing Defects  Manufacturing Defects  Manufacturing Defects 
Not Covered in Warranty Physical Damages  Physical Damages  Physical Damages 
Domestic Warranty 3 Year  3 Year