Premium Backup Software Installation
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See our most frequently asked questions about GoFlex Ultra Portable, Pro, Slim, and Desk external hard drives.
Read MoreGet step-by-step instructions on how to install the NTFS driver on a Mac.
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Watch the videoThe GoFlex, GoFlex Desk, GoFlex Pro and GoFlex Slim drives are flexible enough to use in MacOS, Windows, or both.
Read MoreMany, even most, Seagate and Maxtor-brand external drives are sold with bundled backup and management software. However, in some cases it is not possible to use such software.
Read MorePremium Backup Software Installation
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The NTFS Driver (5MB) allows you to mount the NTFS partition on both a GoFlex and Backup Plus drive as read and write (NTFS would normally be read only in MacOS), so the drive can be used to drag and drop files between a computer running Mac OS and one running Windows.
The NTFS Driver (5MB) allows you to mount the NTFS partition on both a GoFlex and Backup Plus drive as read and write (NTFS would normally be read only in MacOS), so the drive can be used to drag and drop files between a computer running Mac OS and one running Windows.
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This is an updated version of software for Windows 8 users. Learn more
The quick diagnostic tool that checks the health of your drive. Learn more

| Capacity | 500GB | 320GB |
|---|---|---|
| Show me : | ||
| Interface Options | USB 3.0 | USB 3.0 |
| Physical | ||
| Height (in/mm) (maximum) | 4.91/124 | 4.91/124 |
| Width (in/mm) (maximum) | 3.07/78 | 3.07/78 |
| Length (in/mm) (maximum) | .354/9 | .354/9 |
| Weight (lb/g) | .356/160 | .356/160 |
| Model Number | Interface | Capacity |
|---|---|---|
| STBE500100 | USB 3.0 | 500GB |
| STBE320100 | USB 3.0 | 320GB |