Question:  I am writing an application which needs to detect specific DT USB modules via their serial numbers. Where can I find the module's serial number in Windows?

 

Answer:  The barcode sticker on the USB module's case is not the serial number to use. In Window's Control Panel, the Open Layers control panel reads the Device Serial Number from the board's hardware registers. This number is always constant regardless of which PC/OS the module is plugged into. This number can be found in the Registry. The root key for a DT9804 board: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\DtOpenLayersDaDevice\BoardDatabase\DT9804 . The folder name (key) under ...\DT9804 is the serial number in Hex format. For example, 00018F2F = 102191 (