HP lists this spare part number for the HP ProBook 465 G11 in its Maintenance and Service Guide (printed p.21).
Source notes
HP Maintenance and Service Guide for the HP ProBook 465 G11 (Document Part Number N81604-001), spare parts table, printed p.21: "processor and a non-Windows operating system for N95774-001". Read from the cached HP manual (via FDY-MM-015-K5).