12. Install the new backplane:
System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
a. From backplane, disconnect the following cables in the order listed:
v Power cable 1
v SAS signal cable 2
v Configuration cable 3
b. Lift the backplane out of the server by pulling it toward the rear of the
server and then lifting it up.
a. Move the SAS signal cable from the old hard disk drive backplane to the
new backplane 1 . The new backplane comes with the option kit.