This listing is for one Seagate Momentus Thin ST320LT020 320GB internal laptop hard drive with Seagate part number 9YG142-031 and Dell part number 0PPY4K. This slim 7mm 2.5-inch SATA HDD operates at 5,400 RPM and features a 16MB cache for compatible laptops, compact computers, external enclosures and legacy systems. The drive has been tested and is functioning properly. Identifying information includes firmware 0003DEM1 and PCB number 100654403 REV B. The drive may show minor cosmetic wear from previous installation, handling and storage. It will be securely erased and does not include an operating system or software. No mounting bracket, screws, cable, adapter or other accessories are included, and the photos show the actual drive you will receive.