These modular adapters convert from a DB25 male/female to an RJ12 socket jack (female). The pin outs are user configurable to match any needs you may have. Used to connect dump terminals, PC's and telecom equipment to serial devices. The leads are "flying leads" to provide you with more leeway when inserting the pins. This modular adapter is typically used to traverse log distances over a phone line. Each order Contains 1PC (One Piece). Picture demonstrated adapter's front and back connection.