Western Digital unveils the first 2Terabyte hard disk drive in 2.5" form-factor in the world.

The WD My Passport 2TB external hard disk drive with code name (WDBY8L0020BBK) is likely based on four 500GB 2.5" platters and has 5400rpm spindle speed. The drive is probably 12.5mm in height and hence can be used only in large 15" or even 17" notebooks. The My Passport 2TB features USB 2.0 as well as USB 3.0 interface and are compatible with both Apple Mac OS and Microsoft Windows.

The new My Passport drives offer WD SmartWare automatic backup software and WD Security for password protection and hardware encryption. In addition, the latest generation of portable external hard drives were specially-engineered to make the outer shell more resistant to scratches and fingerprints.

My Passport drives come with a 2-year limited warranty and are available online at the WD store and at select retailers and distributors.

Western Digital My Passport Price is $129.99 for 500GB, $149.99 for 750GB, $179.99 for 1TB, $199.99 for 1.5TB and $249.99 for the new 2TB edition.