This object reports the module's product ID as recorded in its factory-programmed identity PROM, a numeric or coded identifier distinct from the human-readable model name. Management and licensing software use this identifier to confirm precisely which sellable product is installed, since it's less ambiguous than a marketing model string that could vary slightly across regions or catalog updates. For example, a specific product ID value here is what a license-checking process would compare against an entitlement record rather than matching on the free-text model name.