Seagate ATLAS 10K III 36GB U320, 36 GB, 10000 RPM, 8 MB, 3.5", SCSI Seagate ATLAS 10K III 36GB U320. HDD capacity: 36 GB, HDD speed: 10000 RPM, Storage drive buffer size: 8 MB, HDD size: 3.5", Interface: SCSI