The Signature Pad shows up in the Device Manager, of the local computer, under “Ports (COM & LPT)”. It should show up as “USB Serial Port”. It is the ONLY thing set to COM9. Change COM Ports by going to the device Properties - “Port Settings” tab - Advanced - Change the drop down for “COM Port Number”. The Ports class installer performs the following tasks when it installs a serial port: Selects a COM port number and sets a port name in the PortName entry value under the device's hardware key. The port name has the format COM, where is the port number. If Serial creates a COM port interface for the serial port, Serial uses the value of.
-->For most devices, the Ports device setup class and the Serial function driver provide the functionality required to operate serial ports and COM ports. To install serial ports and COM ports using these system-supplied components, do the following:
Provide an INF file that specifies the Ports device setup class and the Serial function driver as the service for the port.
To configure a serial port as COM port, comply with the requirements that are defined in Configuration of COM Ports.
For more information about installing serial ports and COM ports using the Ports device setup class and the Serial function driver, see the following topics:
If you do a custom installation of a COM port, you must comply with the COM port requirements that are defined in Configuration of COM Ports.
Driver Ftdi Usb Serial Port
-->By default, the combined operation of the Ports class installer and the Serial function driver configure a serial port as a COM port. Serial creates a COM port device interface for a serial port if the SerialSkipExternalNaming entry value for a device does not exist or is set to zero. For more information about how Serial creates a COM port device interface for a COM port and how to override this operation, see External Naming of COM Ports.
The Ports class installer performs the following tasks when it installs a serial port:
Usb Com Port Driver
Usb Serial Port Drivers
Selects a COM port number and sets a port name in the PortName entry value under the device's hardware key. The port name has the format COM<n>, where <n> is the port number. If Serial creates a COM port interface for the serial port, Serial uses the value of PortName as the symbolic link name for the COM port.
Displays a default property page dialog box, which allows a user to select settings for the port. For information about how to install a custom properties page, see Installing an Advanced Properties Page for a COM Port.
Sets the device friendly name for the device. You obtain the name using the SPDRP_FRIENDLYNAME flag with SetupDiGetDeviceRegistryProperty.
You can supply a co-installer to set registry settings for a Plug and Play serial device. If an entry value is not present in the registry, Serial uses a default value for the port.