This is a common type of electrical connector. They are name for their characteristic D shape metal shield. This connector has 15 through holes in two rows. This type of connector are widely use in serial interfaces for example communication ports, networking ports, etc. The connecting holes are highly insulate with glass fill thermoplastic material for short circuit protection. The contact part is build from high quality copper material. The connectors also ensure that no data fluctuation occurs. The metal shield provides the connector high wear and tear capabilities. A plastic shell is also comes with this connector that helps you to keep the connector safe and highly insulated.