This is a used 160GB 2.5" SATA 9.5mm 5400RPM MacBook hard drive. This is a pull from a working machine and comes with our standard 1 year warranty. Specifications: 9.5 mm high drive for maximum capacity slimline portable applications, Storage Capacity: 160GB. Interface: Serial ATA ( SATA) . Buffer size: 8MB. Form Factor: 2.5-inch x 9.5mm.