Find the entry for (usually under "Other devices"). Right-click it and select Properties . Go to the Details tab. Select Hardware Ids from the Property dropdown menu.
You can confirm if your "Unknown Device" is indeed the free fall sensor by following these steps: Right-click the and select Device Manager . acpi smo8800
You need to know your exact laptop model (e.g., Dell Latitude E7440, HP EliteBook 840 G3). Find the entry for (usually under "Other devices")
Navigate to the Dell Drivers & Downloads page. Enter Your Service Tag: Dell Latitude E7440