List of SerialPorts queried using WMI differs from devicemanager?

Question

I have the following serial ports listed in my devicemanager:

• COM3
• COM4 (BT)
• COM5 (BT)
• COM6 (GlobeTrotter MO67xx - Control Interface

Answer 1

The Win32_SerialPort class used in this article reports the physical com ports, if you wanna enumerate all the serial ports including the USB-Serial/COM ports, you must use the MSSerial_PortName class located in the root\wmi namespace.

Also try these classes located in the same namespace

• MSSerial_CommInfo
• MSSerial_CommProperties
• MSSerial_HardwareConfiguration
• MSSerial_PerformanceInformation

Note : If you want to know the properties and methods of this class you can use the WMI Delphi Code Creator.