Device's PnP hardware ID stored in a numeric 32-bit compressed EISA-type ID. This value must match the corresponding HID in the ACPI name space.
Unique ID that is required by ACPI if two devices have the same _HID. This value must also match the corresponding UID/_HID pair in the ACPI name space. Only the 32-bit numeric value type of UID is supported. Thus, strings must not be used for the UID in the ACPI name space.