12. Reconnect the disk drives power connectors.
13. Reinstall the holding plate by inserting the upper part to the rail on the
inner side of the housing roof, then fitting in the lower part.
14. Slide the holding plate to the left until it fits completely and the screw
15. Secure the holding plate with the screws that you removed earlier.
16. Reinstall the left door and close it.
17. Close the lower front door and lock the system housing.
18. Reinstall the plastic fan cover on the rear panel.
19. Reconnect the AC power cables.