What is a serial connector?

Answer 1

Serial connector term is used for an interface connector on which the protocol of data transfer is serial type. Serial data transfer means one electrical connection or signal for data transfer (one bit at a time from transmitter to receiver) at specific speed (bits per second). Note that on the connector actually there may be more than one electrical connections for signals other than serial data, which include clock and power in some cases, or control signals. Serial data itself may be electrically sent in differential form in which case serial data itself needs two wires (positive and negative). Common examples of serial connectors include serial port (RS232) and USB.