SCSI logo

SCSI logo.

Small Computer System Interface (also known as SCSI, skuz-ee) is a parallel interface standard pioneered by Larry Boucher of Shugart Associates and later Adaptec.[1]

SCSI in the PippinEdit

Pippin motherboard

The internal 50-pin SCSI interface is beige, near the top right corner of this Pippin motherboard.

The SCSI interface was first adopted by Apple Computer with the Macintosh Plus and was in use across the Power Macintosh line at the time the Pippin platform was in development. An internal 50-pin SCSI interface on the Pippin console's motherboard is used to connect to a 4x-speed or faster CD-ROM drive, set to SCSI ID #3.[2]

A Pippin expansion dock can also be used to add an external SCSI port to a Pippin console. Examples include the Deltis 230 MO Docking Turbo or unreleased SCSI expansion dock. However, Pippin ROM revision 1.2 or later would be required to support SCSI devices (besides the CD-ROM) connected to the internal bus or through the dock's X-PCI expansion port.[3][4]

In some KMP 2000 consoles from Katz Media, the SCSI interface is daisy-chained through the CD-ROM drive to an external Centronics connector on the back of the unit. Some developer consoles were modified with passthrough ribbon cables to support additional SCSI devices.[5] On such consoles, a SCSI2SD adapter can allow the use of a Secure Digital (SD) card in place of a hard disk drive.[6] The Pippin Atmark-PD and EX would have offered a built-in DB-25 SCSI port, but were never seen past the prototype stage.[7][8]



  1. How Computer Storage Became a Modern Business by Computer History Museum, YouTube. 2005-03-09.
  2. Technical Notes: Creating Pippin CD-ROMs, Apple Computer. 1996-05-10.
  3. Useful Notes / Pippin, TV Tropes. Accessed 2017-04-20.
  4. SCSI接続その1 (Japanese) by Kankoba, MAISON PiPPiN, GeoCities. Archived 2002-11-15.
  5. Hacking the Pippin by Phil Beesley, Vintage Macintosh. 2007-10-22. Archived 2017-08-17
  6. replacing scsi cd-rom drive with scsi sd card adapter? by defor, Arcade-Projects. 2015-10-13.
  7. Atmark-PD (Japanese), Atmark Channel. Archived 1997-06-29.
  8. Atmark-EX (Japanese), Atmark Channel. Archived 1997-06-29.

External linksEdit