When comparing Seagate Backup Plus Ultra Slim 2TB vs WD My Passport, the Slant community recommends WD My Passport for most people. In the question“What are the best external hard drives?” WD My Passport is ranked 4th while Seagate Backup Plus Ultra Slim 2TB is ranked 6th. The most important reason people chose WD My Passport is:
At 0.54lbs, it's quite portable and easy to just throw into a bag and carry around.
Specs
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Pros
Pro 200GB OneDrive storage for 2 years
Free cloud storage for 2 years
Pro Drivers for MAC
Allows to easily switch between MS Windows and MAC OS
Pro Thin, stylish design
Dimpled pattern and comes in platinum and gold finishes
Pro Very portable
At 0.54lbs, it's quite portable and easy to just throw into a bag and carry around.
Pro Relatively long warranty
The WD My Passport comes with a 3-year warranty.
Pro Large Capacity options
Models available to up to 4TB.
Pro Supports Mac and PC
Supports both NTFS and HFS+(needs formating).
Pro Has a backup software
Western Digital provides a backup application that can be downloaded from the manufacturer's site. You can use the application to create automated backups or manual on-demand backups.
Pro WD is generally more reliable than Seagate Drives
Cons
Con Lacks rubber feet for grip
Will easily slide around the surface
Con Basic features
Con No encryption
Con Relatively slow for single-file transfers
Even though it has a 201.8MB/s write speed, according to benchmarks it's surprisingly slow with single-file transfers compared to other portable hard drives.
Con Doesn't have a Thunderbolt port
If you use a Mac or a higher end Windows unit, you may have experienced the speed of Thunderbolt external devices. Thunderbolt drives are more expensive than USB drives. Though, a similar 5400 rpm drive using a Thunderbolt connection can read 1.5x faster than USB 3. But you may not care depending on your usage. It has not hurt some users, some 80% of computer users will not find any benefit to Thunderbolt.