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Seagate FreeAgent GoFlex 1 TB FireWire 800 USB 2.0 Ultra-Portable External Hard Drive for Mac

FireWire 800 or USB 20 plug-and-play drive
Compatible with Time Machine software
Upgradeable to USB 30 and powered eSATA
Use the same drive interchangeably on both Mac and PC computers
Durable soft-touch silver finish to help resist fingerprints
Carry files with you on the go