The ThinkPad 500 GB 7200 rpm 7 mm SATA3 Hard Drive option provides a robust thin design enabling a seamless upgrade from the primary hard drive of supported ThinkPad laptops. This option provides good storage size, advanced format, SATA 6.0 Gbps data transfer capabilities and 7200 rpm disk speeds providing almost desktop-like performance. The advance format of 4k sector emulates the 512 sector drives while delivering higher capacity points along with improved error correction capabilities. The ultimate benefit of higher HDD density at a lower cost per gigabyte.