Serial cable and data cable are not exactly the same. A serial cable is an interface cable that transmits data and is used to connect a computer to external devices, such as printers and modems. It is usually used for serial communication, transmitting data bit by bit. The data cable refers to a cable or interface line used to transmit data, which can be various types of interface lines, such as USB cables, HDMI cables, network cables, etc. Data lines can be used to transmit various types of data, while serial lines are mainly used to transmit serial data.