9Tighten the thumbscrew at the bottom of the power supply to secure it in place.
10Place the upper drive bay bracket on the top of the chassis. Make sure the tabs on the bottom of the bracket fit into the slots at either side of the chassis.
11Slide the upper drive bay bracket back to set the tabs, then replace the four screws you removed in Step 3.
12Close the case. (See “Closing the case” on page 31.)
13Reconnect the power cord and all external peripherals, then turn on the server.
88Replacing and Adding Internal Devices