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| Price | Pricing not available | $129.00 to $199.95 | $154.99 to $179.00 | $124.95 | $38.99 to $106.33 |
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| The Bottom Line | It's big, and it's fast. The OWC Mercury On-The-Go offers fast throughput via USB 2.0, FireWire 400, and FireWire 800, and it's the biggest compact hard drive, at 500GB, you can get right now. | 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. | Mac users who need a fast portable hard drive will find it in the new My Passport Studio. Windows users should look elsewhere for a better deal. | The G-Tech G-Drive Mobile's Mac-friendly formatting, triple interface design, and snappy throughput performance make it a worthwhile storage solution for Apple users. | |
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| Features | |||||
| Capacity | 500 GB | 1.5 TB | 1 TB | 500 GB | 320 GB |
| Form Factor | 2.5" | Info unavailable | Info unavailable | Info unavailable | 2.5" |
| Data Transfer Rate | 800Mbps(FireWire800)/400Mbps(FireWire)/480Mbps(Hi-Sp.USB) | 5.0 Gbps (SuperSpeed USB) | 800 Mbps (FireWire 800) / 480 Mbps (Hi-Speed USB) | Info unavailable | 480 Mbps |
| Buffer Size | 8 MB | Info unavailable | Info unavailable | 8 MB | Info unavailable |
| Spindle Speed | 5400 rpm | Info unavailable | Info unavailable | 5400 rpm | Info unavailable |
| Power Source | FireWire bus Included AC adapter USB bus | USB bus | Info unavailable | USB bus | USB bus |
| Dimensions (WxDxH) | 3.5 in x 5.5 in x 1 in | 3.5 in x 4.7 in x 0.9 in | 3.3 in x 5 in x 0.9 in | Info unavailable | 3 in x 5.2 in x 0.5 in |
| Manufacturer Warranty | 1 year warranty | 3 years warranty | 3 years warranty | 3 years warranty | 3 years warranty |
| Enclosure Color | Info unavailable | Black | Info unavailable | Info unavailable | Info unavailable |
| Weight | Info unavailable | 9.9 oz | 10.9 oz | Info unavailable | 6.4 oz |
| Localization | Info unavailable | South America North America | Latin America United States Canada | Info unavailable | Info unavailable |
| Microsoft Certification | Info unavailable | Compatible with Windows 7 | Compatible with Windows 7 | Info unavailable | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
| Buying choices | Pricing not available | | | | |
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OWC Mercury On-The-Go compare (500GB)
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