Portable Design: This hard drive has a compact 2.5-inch form factor that is easy to carry. High Capacity: With 300GB of storage space, you'll have plenty of room for files and media. Reliable Performance: The hard drive has a 10,000 RPM spin speed and 128MB of cache memory for fast data access. SAS Interface: The hard drive uses a SAS interface for high-speed data transfer. Compatible with Desktop Computers: This hard drive is designed to work with desktop computers and servers.