Western Digital 1 TB 2.5" Performance Mobile Hard Drive (WD10SPSX) - Capacity: 1 TB, Form Factor: 2.5 Inch, Transfer Rate: up to 6Gb/s, Interface: SATA III, Disk Speed (RPM): 7200rpm, Compatibility: WD_BLACK 2.5-inch hard drives are designed and tested for use in small form factor desktop PC's, PC laptops, Mac laptops, Color: Black