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| Price | $99.95 to $214.85 | $139.99 to $296.48 | $388.99 | $134.00 to $295.99 | $257.99 |
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| Release date | March 19, 2007 | ||||
| The Bottom Line | The Western Digital My Book Mirror Edition is a compelling choice for an external drive, delivering excellent value, good performance, and two hard drives for added data security. For anyone looking for an external USB 2.0 drive, the My Book Mirror belongs on your shortlist. | The Seagate FreeAgent Xtreme offers three interface options, a useful software bundle, and a lengthy warranty for a fair price. We like this direct-attach external drive. | The Western Digital MyBook Essential Edition external hard drive is a slightly pared-down version of the MyBook Premium Edition. It's a good option if you need additional storage without backup software. | The Seagate FreeAgent Pro external hard drive is an elegant workaround for users who are intimidated by NAS drives. The bundled software is simple to use and makes copying your data to various location a cinch. We really like this external hard drive. | |
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| Features | |||||
| Buffer Size | 16 MB | Info unavailable | Info unavailable | 16 MB | Info unavailable |
| Spindle Speed | Info unavailable | Info unavailable | 7200 rpm | 7200 rpm | 7200 rpm |
| Type | Hard drive - External hard drive | Hard drive array | Hard drive - External hard drive | Hard drive - External hard drive | Hard drive - External hard drive |
| OS Required | Microsoft Windows XP Microsoft Windows 2000 Microsoft Windows Vista Apple MacOS X 10.4.8 or later | Apple MacOS X 10.5.2 or later Apple MacOS X 10.4.11 or later Microsoft Windows Vista / 2000 / XP | Microsoft Windows Vista Business SP1 Microsoft Windows Vista Ultimate SP1 Microsoft Windows XP Home Edition SP2 Microsoft Windows XP Professional SP2 Microsoft Windows Vista Home Basic SP1 Microsoft Windows Vista Home Premium SP1 Microsoft Windows XP Media Center Edition SP2 | Microsoft Windows Vista Apple MacOS X 10.3 or later Microsoft Windows 2000 / XP | Microsoft Windows Vista Apple MacOS X 10.3.9 or later Apple MacOS X 10.4.6 or later Microsoft Windows XP Home Edition Microsoft Windows XP Professional Microsoft Windows 2000 Professional |
| Environmental Standards | Yes | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Vista Certification | Works with Windows Vista | Info unavailable | Info unavailable | Compatible with Windows 7 | Works with Windows Vista |
| Enclosure Color | Info unavailable | Info unavailable | Black | Info unavailable | Info unavailable |
| Data Transfer Rate | 480 Mbps | Info unavailable | Info unavailable | 480 Mbps | Info unavailable |
| Localization | United States | Info unavailable | Info unavailable | North America | Info unavailable |
| Average Seek Time | Info unavailable | Info unavailable | Info unavailable | 8.9 ms | Info unavailable |
| Weight | 2.5 lbs | 5.8 lbs | 3.1 lbs | 2.9 lbs | Info unavailable |
| Manufacturer Warranty | 1 year warranty | 3 years warranty | 5 years warranty | 1 year warranty | 5 years warranty |
| Storage Controller | Info unavailable | RAID | None External - USB 2.0|FireWire 400|eSATA | Info unavailable | None |
| Capacity | 1 TB | 1 TB | 1 TB | 500 GB | 500 GB |
| Dimensions (WxDxH) | 2.1 in x 5.4 in x 6.5 in | 3.9 in x 6.1 in x 6.5 in | 1.3 in x 6.8 in x 6.9 in | 2.2 in x 5.6 in x 6.7 in | 1.4 in x 6.3 in x 7.5 in |
| Power Source | Included AC adapter | Info unavailable | Included AC adapter | Included AC adapter | Included AC adapter |
| Product Description | My Book Essential Edition 2.0 WDH1U10000 - Hard drive - 1 TB - Hi-Speed USB | My Book Mirror Edition WDH2U10000 - Hard drive array - 1 TB | FreeAgent XTreme - Hard drive - 1 TB - IEEE 1394 (FireWire) / Hi-Speed USB / eSATA-300 | My Book Essential Edition WDG1U5000 - Hard drive - 500 GB - Hi-Speed USB | FreeAgent Pro - Hard drive - 500 GB - IEEE 1394 (FireWire) / Hi-Speed USB / eSATA-300 |
| Interface Type | Hi-Speed USB | Info unavailable | IEEE 1394 (FireWire) / Hi-Speed USB / eSATA-300 | Hi-Speed USB | IEEE 1394 (FireWire) / Hi-Speed USB / eSATA-300 |
| Form Factor | Info unavailable | Info unavailable | 3.5" | Info unavailable | 3.5" |
| Voltage Required | AC 120/230 V | AC 120/230 V | Info unavailable | AC 120/230 V | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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