IBM System x3650 M3 4255 Installation And User Manual page 82

13. Make sure that the configuration cable is connected to the backplane.
14. Remove the rear controller retention bracket located in the battery bay above
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System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
b. Connect the new power cable that comes with the option kit to the new
hard disk drive backplane 2 .
c. Connect the configuration cable to the new backplane 3 .
d. Angle the new backplane and place the bottom edge into the slots for it on
the chassis.
e. Rotate the backplane upright so that the bracket goes underneath the latch
and tabs on the chassis and is engaged into the slots on the backplane
bracket.
the power supplies by pulling up the release tab 1 and sliding the bracket
outward 2 .