Fujitsu MHX2250BT raises the bar again for 2.5" Serial ATA (SATA) laptop hard drives. Featuring perpendicular recording technology as well as storage space of 250GB, the new Fujitsu MHX2250BT are the first 2.5" SATA hard drive in the world to achieve this capacity. Note: The Fujitsu MHX2250BT 2.5" SATA hard drive is thicker than normal 2.5quot; SATA hard drives (12.5 vs 9.5 mm), so if you are planning to upgrade your laptop hard drive with this one, make sure your hard drive is OK to take 12.5mm thick hard drives.