DoIT Showroom Buyer's Guide

• Home
• DoIT HelpDesk
• DoIT Homepage
• Incoming Students
• Personal Computing Checklist

SCSI Connectors Guide

The purpose of this guide is to allow you to identify the type of connector you are dealing with, so that you can know exactly what cable to buy. Cables sold by the Tech Store are in the Catalog, and some other cables are available on special order.

The terminology 'male' and 'female' refers to the 'gender' of a connector. 'Male' connectors are inserted into 'female' connectors.

Internal SCSI III MD 68-Pin

Used for internal scsi-3/ultra2/lvd applications: hard drive, cd-rom, removable storage drive.
Diagram	Actual image
Internal Micro-68 Male Internal 68-Pin Fast/Wide Male Internal 68-Pin High-Density D-Sub Male SCSI III
Internal Micro-68 Female Internal 68-Pin Fast/Wide Female Internal 68-Pin High-Density D-Sub Female SCSI III

IDC 50-Pin Internal

Used for internal scsi-1/scsi-2 applications: hard drive, cd-rom, removable storage drive.
Diagram	Actual image
Internal 50-Pin SCSI Male IDC-50 Male
Internal 50-Pin SCSI Female IDC-50 Female

Centronics 50

Used for scsi-1 applications: older scanners, controllers, external scsi device cases. The Centronics 50 connector has 50-pins arranged in two rows one on top of the other. The top row has 25 pins and the lower row has 25 pins.
Diagram	Actual image
Centronics 50-pin male
Centronics 50-pin female
Centronics 50-pin with clips	Centronics 50-pin with screws

DB-25 Pin

Used for parallel, serial or scsi applications: modem, null modem, laplink, printer, scanner, removable storage drive, Apple scsi. The DB25 connector has 25-pins arranged in two rows one on top of the other. The top row has 13 pins and the lower row has 12 pins.
Diagram	Actual image
DB-25 Male
DB-25 Female

External Micro-D50

Used for scsi-2 applications: scanner, removable storage drive, controller, external cdr/cdrw. The Micro DB50 connector has 50-pins arranged in two rows one on top of the other. The top row has 25 pins and the lower row has 25 pins. Also known as HD(High-Density)50 & HP(Half-Pitch) DB50.
Diagram	Actual image
External Micro-D50 Male External 50-Pin High-Density D-Sub Male
External Micro-D50 Female External 50-Pin High-Density D-Sub Female

HDI-30 Male

Used for scsi applications: Apple PowerBook. The HDI-30 connector has 30-pins arranged in five rows one on top of the other.
Diagram	Actual image
HDI-30 Male Fits female connection on back of Powerbook

External SCSI III 68-Pin

Used for scsi-3 applications: scanner, removable storage drive, controller, external cdr/cdrw, ultra/2. The Micro DB68 connector has 68-pins arranged in two rows one on top of the other. The top row has 34 pins and the lower row has 34 pins. Also known as HD(High-Density)68 & HP(Half-Pitch) DB68.
Diagram	Actual image
External Micro-68 Male External 68-Pin Fast/Wide Male External 68-Pin High-Density D-Sub Male SCSI III
External Micro-68 Female External 68-Pin Fast/Wide Female External 68-Pin High-Density D-Sub Female SCSI III
High-Density 68 with clips	High-Density 68 with Pins