This read-only object mirrors the `clei` property of a manufacturing/FRU identity record used to identify a hardware unit for support, procurement, and regulatory purposes inside Cisco UCS Manager's internal information model, exposed here as a text string for this manufacturing-data record. The clei field reports the Common Language Equipment Identifier code assigned to this manufacturing-data record -- a standardized code used in telco-style regulatory and inventory systems. A carrier customer running compliance audits on the FRU record for a specific power-supply model would specifically look up this CLEI code rather than the Cisco part number.