1TB (SATA II, 7200RPM, 32MB Cache) Seagate Barracuda 3.5" Internal Drive...Perfect for desktop PC and Mac computers, the Barracuda drives deliver the technology, efficiency and large capacities needed by today's computer enthusiasts. The combination of proven Seagate perpendicular recording technology, Native Command Queuing (NCQ), large 32MB cache and the speed of a SATA 3Gb/s interface delivers the optimum mix of performance and energy efficiency. Perpendicular recording technology increases performance and reliability by aligning the data bits vertically on the disk. NCQ dramatically increases performance by organizing incoming commands in the most efficient order. For high-end/gaming computers and RAID arrays, the Barracuda 7200 RPM drive delivers both exceptional reliability and performance with sustained data transfer rates of up to 120MB/s. Includes Drive, Interface cable, Power adapter, Mounting screws, CD with software and manual, Quick installation guide.