HP EliteOne 1000 G2 Hardware Reference Manual page 26

8. Connect the two monitor cables to the system board connectors.
9. To replace the rear access cover, slide tabs on the front of the rear cover into the slots on the rear of the
front cover (1), and then press the rear of the rear cover down (2).
NOTE:
10. Reconnect the power cord and any external devices, and then turn on the computer.
20 Chapter 3 Hardware repair and upgrade
Be sure that all cables are properly routed to prevent damage when the cover is replaced.