RS-232 serial lead, for use with an Electrocorder with a circular 4 pin female port (not mini-DIN) & labelled ‘Serial Port’ or 'RS232'. This lead has a 4-pin circular plug (male) on one end and a 9-pin 'D' socket (female) on the other. Designed to connect directly to a standard 9-pin serial port on a PC. Length 1.5m.