IBM System x3650 M3 4255 Installation And User Manual page 88

13. Install hard disk drive backplane 1:
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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 new hard
disk drive backplane 2 2 .
c. Connect the configuration cable to backplane 2 3 .
d. Angle the new backplane and place the bottom edge into the slots for
backplane 2 on the chassis next to the optical drive.
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.
a. Connect the right-angle end of the longer SAS signal cable that comes with
the option kit to hard disk drive backplane 1 1 .