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| Product | Seagate BlackArmor PS 110 USB 3.0 | Seagate Backup Plus (1TB, blue) | WD My Passport Portable (2TB, USB 3.0, Black, March 2012)  | Western Digital My Book 3.0 (2TB) | Seagate FreeAgent GoFlex Ultra-portable (1.5TB, USB 3.0, 22mm) |
| Price | $345.06 | $89.00 to $106.99 | $149.00 to $180.00 | $251.44 | $145.89 to $242.74 |
| CNET editors' rating | 4 stars | 4 stars | 4 stars | 3.5 stars | 4 stars |
| Average user rating | 1.5 stars | 4 stars | 0.5 stars | 1 stars | 2 stars |
| Release date | Info unavailable | June 11, 2012 | Info unavailable | Info unavailable | Info unavailable |
| Bottom line | The Seagate BlackArmor PS 110 USB 3.0 is a well-designed external hard drive that is fast, portable, and future-proof. | Seagate Backup Plus carries the flexibility of the GoFlex portable drive while adding performance and style to portable storage. The new drive makes an excellent buy. | The WD My Passport Portable makes an excellent portable drive for use with both desktop and laptop computers, at home or while on the road. | Western Digital's My Book 3.0 is a great external-storage addition for desktop computer users. However, notebook users have better choices. | Even with the slightly low USB 3.0 performance, the GoFlex Ultra still makes an excellent portable external hard drive for people who need to expand their computer's storage. |
| Product Description | BlackArmor PS 110 USB 3.0 Performance Kit - Hard drive - 500 GB - USB 3.0 | Seagate Backup Plus STBU1000102 - Hard drive - 1 TB - USB 3.0 | WD My Passport WDBY8L0020BBK - Hard drive - 2 TB | WD My Book 3.0 WDBABP0010HCH - Hard drive - 1 TB - USB 3.0 | Seagate FreeAgent GoFlex - Hard drive - 1.5 TB |
| Packaged Quantity | 1 | 1 | 1 | 1 | 1 |
| Type | Hard drive - External hard drive ( Portable ) | Hard drive - External hard drive ( Portable ) | Hard drive - External hard drive ( Portable ) | Hard drive - External hard drive ( Desktop ) | Hard drive - External hard drive |
| Capacity | 500 GB | 1 TB | 2 TB | 1 TB | 1.5 TB |
| Data Transfer Rate | 5.0 Gbps (USB 3.0) | Info unavailable | 5.0 Gbps (USB 3.0) | 5.0 Gbps (USB 3.0) | 5.0 Gbps (SuperSpeed USB) |
| Features | 256-bit AES | Automatic backup | Hardware encryption NTFS formatted | Security lock slot (cable lock sold separately) | Info unavailable |
| Power Source | USB bus | Info unavailable | USB bus | Included AC adapter | USB bus |
| Dimensions (WxDxH) | 3.1 in x 5.1 in x 0.5 in | 3.2 in x 0.6 in x 4.9 in | 3.2 in x 4.4 in x 0.8 in | 1.9 in x 5.3 in x 6.5 in | 3.5 in x 4.7 in x 0.9 in |
| Weight | 6.3 oz | 7.9 oz | 8.1 oz | 2.6 lbs | 9.9 oz |
| Localization | United States | South America North America | Latin America United States Canada | Info unavailable | South America North America |
| Manufacturer Warranty | 5 years warranty | 2 years warranty | 2 years warranty | Info unavailable | 3 years warranty |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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