COM Ports on PCsThe Port Settings tab displays the default settings for the port. A USB/serial converter
doesn’t use the bit rate, parity, and Stop bits in communications between the PC and
the converter, but a driver can send these values to a device that uses the settings on its
serial port. For example, a USB/RS-232 converter can set the parameters of its RS-232
port to match values specified on the PC. The Advanced Settings window enables set-
ting buffer properties and the COM-port number. Applications can change the param-
eters from the default values set in the Device Manager.