The DB25 connector is mainly used in serial and parallel ports, allowing asynchronous data transmission according to the RS-232 standard (RS-232C). 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. BigCatCables.com offers a variety of lengths from 6 Foot to 50 Foot and multiple configurations Male to Male and Male to Female.