Serial ATA hard disks require a different type of power connector than those found inside older computers. This tiny adapter solves that problem: it connects the new serial ATA hard disk to the computer's power supply.
Sandberg Serial ATA Power adapter
Sandberg Serial ATA Power adapter. Package width: 0.335" (8.5 mm), Package depth: 0.0787" (2 mm), Package height: 0.492" (12.5 mm)