Samsung Spinpoint M 160GB Ultra-ATA/133 HDD, 160 GB, 5400 RPM, 8 MB, 2.5", Ultra-ATA/133 Samsung Spinpoint M 160GB Ultra-ATA/133 HDD. HDD capacity: 160 GB, HDD speed: 5400 RPM, Storage drive buffer size: 8 MB, HDD size: 2.5", Interface: Ultra-ATA/133