Get from Amazon.com : http://www.amazon.com/gp/product/B00E7LXHYE?tag=hawaiianlegac-20Toshiba 320GB 2.5-inch Hard Drive for Laptop. SATA III (6Gb/s) 5400 RPM 8MB Cache - MQ01ABF032Rotational Speed 5400 RPM Interface SATA 60 Gbs Cache 8 MB