Seagate Laptop SSHD is an 2.5" SSHD (Solid State Hybrid Drive) offering the benefits of both solid-state and hard disk drives in one unit. This 500 Laptop SSHD model connects through SATA I interface and has a spindle speed of 5400 RPM, providing performance and resilience. It also has 65536 KB buffer size. The dimensions of this Seagate data storage device are 0.27 inch height, 2.75 inch width, 3.95 inch depth, and its weight is 0.21 lbs.