DB-25

What Does DB-25 Mean?

DB-25 is part of the D-subminiature (D-Sub) connector plug and socket family for computer and communication devices. DB-25 is a 25-pin electrical connector for serial and parallel computer ports. It is arranged in rows of two with one 13-pin row above another 12-pin row.

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Techopedia Explains DB-25

The DB-25 connector is used for parallel, small computer system interface (SCSI), or RS-232 serial applications. In parallel applications, DB-25 connectors are known as IEEE-1284 Type A connectors.

The male DB-25 is the second-oldest serial computing port, referred to as COM2, and the standard 25-pin D-shell connector for EIA-232 serial communication. Various RS-232 communications devices use the male version.

The female DB-25 is primarily used for computer printer ports. Older computers contain only one DB-25 female parallel port.

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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.