Enumerate serial ports
String PortName = ""; try { UInt16 PortsCount = ftspcControl1.EnumSerialPorts(); for (UInt16 i = 0; i < PortsCount; i++) { PortName = ftspcControl1.GetSerialPort(i); // Todo: add your code } } catch (FTSPCException E) { MessageBox.Show("Error " + E.ErrorCode.ToString() + "\r\n" + E.ErrorSource, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); }