ocr: Macintosh Internal Hard Disk 160SC System Requirements Touse a Macintosh Internal Hard Disk 160SC, you must have a Macintosh II or Macintosh IIx personal computer. Technical Specifications Capacity Data capacity: 160megabytes( (ormatted) Data surfaces: 5 IleadsSurface: I Block size: 512byles Total disk blocks: 327,780 Blocks/Track: 32t051 Characteristics Average seek time: 181 mnilliseconds Kotational speed: 3,600rpm Startup time: 20 seconds Spin-down time: 20: seconds Interface Connects directly to the Macintosh HI or Macintosh lix via the: SCSI 50-pin connector, Electrical Line voltage: 85to ...