It is the original thick version with model number M8634G/B. This is the thicker white cable that connects FireWire hard drives, original legacy iPod Classic (2001 and 2002 models), optical drives to various Power Macintosh G3, G4 and iMac systems, as well as iBooks, G4 Cube and hardware that has Firewire 400 ports with the 6-pin connection.
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