HP guide description: "Fan (includes cable and captive screws)". OEM documentation only; not bench-tested.
Source notes
HP EliteBook 840 G2 Notebook PC / HP EliteBook 740 G2 Notebook PC / HP ZBook 14 G2 Mobile Workstation Maintenance and Service Guide, printed p40 (PDF p50): "(14) Fan (includes cable and captive screws) 730792-001".