DSUB, which stands for D-Subminiature, is a type of electrical connector widely used in different fields such as computing, telecommunications, and industrial control systems. This type of connector features a D-shaped design with two or more rows of pins or sockets and is available in sizes such as 9, 15, 25, 37, and 50. Some common synonyms for the word DSUB include DB, sub-miniature, D-shell, D-connector, D-type, and DA. Each of these synonyms refers to the same type of connector, but they may be used interchangeably depending on the context. Whatever it is called, DSUB is an important component in different electronic devices and equipment.