Serial cables are those that connect serial devices to serial communication ports. These cables are able to transmit data using actual serial communication. In most cases a serial cable will use an RS-232 Standard which is for serial binary data signals that are used when linking Data Circuit-terminating Equipment and Data Terminal Equipment.

These cables can be made using D-submarine connectors depending on what is will be used for. Also, the number of wires that are housed within the cable will vary depending on the circuits that are required. The length that the actual serial cable will end up being will depend on the individuality of the serial port receivers and transmitters.