There are many ways to identify USB devices plugged into a Windows USB compliant system and here are some of the methods we use to view the USB vendor and product ids:
Depending on the operating system in use the device’s entry in the Device Manager may show the required information. Touch screens are likely to either reside in the Mice and other pointer devices (if a custom driver is loaded to support the device), Human Interface Devices or Universal Serial Bus devices sections.
You need to invoke the Device Manager appropriate to your version of Windows OS.
Once the Device Manager is loaded you need to click on the individual USB entries and look at the Details tab, Hardware ids associated to any touch devices as per this example below:
There are a number of free utilities that will list off USB devices, such as USBDeview. The vendor and product ids are shown in the last 2 columns of the example below:
One tip when trying to identify a device is to take a view before the touch screen is plugged in then a view afterwards and note the new device added in the Device Manager or USB list.
You can also save the output to a text file using the File Menu, Edit - Select All, File - Save Selected items. This will save the output to a .txt file.
For UPDD to recognise the above device the same vendor and product id must be held against the supported devices for any given build of our software.
The 'upddutils pnpinfo' command can be used to list the supported devices along with their vendor and product ids as shown below: