Seagate S-series Spinpoint M7E, 320 GB, 5400 RPM, 8 MB, 2.5", Serial ATA II Seagate S-series Spinpoint M7E. HDD capacity: 320 GB, HDD speed: 5400 RPM, Storage drive buffer size: 8 MB, HDD size: 2.5", Interface: Serial ATA II