HP guide description: "Base enclosure (includes RJ-45 cover, rubber feet, and service cover eject latch assembly):". OEM documentation only; not bench-tested.
Source notes
HP EliteBook 820 G2 Notebook PC and / HP EliteBook 720 G2 Notebook PC Maintenance and Service Guide, printed p23 (PDF p33): "(14) Base enclosure (includes RJ-45 cover, rubber feet, and service cover eject latch assembly): 765603-001".