Samsung Spinpoint P 40GB Ultra-ATA/133 HDD, 40 GB, 7200 RPM, 2 MB, 3.5", Ultra-ATA/133 Samsung Spinpoint P 40GB Ultra-ATA/133 HDD. HDD capacity: 40 GB, HDD speed: 7200 RPM, Storage drive buffer size: 2 MB, HDD size: 3.5", Interface: Ultra-ATA/133