Seagate Cheetah ST3146855LC-RFB, 146.8 GB, 15000 RPM, 16 MB, 3.5", Ultra320 SCSI Seagate Cheetah ST3146855LC-RFB. HDD capacity: 146.8 GB, HDD speed: 15000 RPM, Storage drive buffer size: 16 MB, HDD size: 3.5", Interface: Ultra320 SCSI