CONNECTOR GLOSSARY
==================

   This Reference attempts to use the correct, or at least consistent,
designations for all connectors. Some of these designations are not in
common use, so this glossary lists and describes all connector names
used.

    BNC         Two-conductor (center and shield) coaxial connector with
                twist lock. Typically used for thin Ethernet.

    CARD-EDGE   Not an official designation. A connector, usually
                without a shell, consisting of an extended piece of
                printed-circuit board with conductors on one or both
                sides, or a matching female connector, with a slot into
                which the circuit board extension is pushed. Common
                examples are the ISA, EISA, MicroChannel, PCI, and
                Multibus buses.

    DE          Small D-subminiature shell, commonly used for nine-pin
                serial ports and video connectors, and fifteen-pin VGA
                video connectors.

    DE9         DE shell with nine pins in two rows, commonly called
                DB9. Typically used for serial ports and monochrome
                video connectors.

    DA          Somewhat wider D-subminiature shell, commonly used for
                AUI Ethernet connectors (sometimes incorrectly called
                "thicknet") and game ports on IBM-type PCs.

    DA15        DA shell with fifteen pins in two rows, commonly called
                DB15. Typically used for AUI Ethernet and type-3
                keyboard/mouse connectors.

    DB          The most common size of D-subminiature shell, commonly
                used for 25-pin serial ports, SCSI ports on Macintoshes,
                and parallel ports on IBM-type PCs.

    DB25        DB shell with 25 pins in two rows. Typically used for
                serial ports.

    DD          Large D-subminiature shell, not in common use outside of
                older Sun equipment.

    DD50        DD shell with 50 pins in three rows, commonly called
                DB50 or D50. Typically used for SCSI ports on older
                equipment.

    DIN-8       Not an official designation. Round DIN shell with eight
                pins.

    HD50        Not an official designation. D-subminiature-like shell
                with fifty closely-spaced pins in two rows, typically
                used for SCSI ports on newer equipment.

    HEADER      Not an official designation. A connector, possibly
                without a shell, consisting of pins on 1/8" (???)
                centers, reminiscent of a jumper block, or a matching
                female connector. May have any number of pins or rows.
                Typically used only internally. Common examples are VME
                and the connectors on raw SCSI and IDE disk drives.