Install the front 3.5'' drive backplane
Use this information to install the front 3.5'' drive backplane.
About this task
Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.
Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.
Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding system.
Procedure
After you finish
Reinstall all the drives and drive fillers into the drive bays. See Install a 2.5''/3.5'' hot-swap drive.
Complete the parts replacement. See Complete the parts replacement.
Demo video

Put the backplane under the front I/O assembly cables, align it with the chassis, and lower it into the chassis. Put the backplane into place with it leaning backward slightly so that the three pins 1 on the chassis pass through the three holes 2 in the backplane.
Close the release latches to secure the backplane in place.