IBM System x3650 M3 4255 Installation And User Manual page 90

17. Remove the fillers (if they are installed) from the four connectors on the SAS
18. Install the SAS expander card:
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System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
a. Align the retention bracket controller slot so that it faces the rear of the
server.
b. Place the bracket tabs in the holes on the chassis and slide the bracket to
left until it clicks into place.
expander card that comes with the option kit.
a. Insert the SAS expander card into the connector on the SAS riser-card.
b. Insert the front of the SAS expander card into the front retention bracket.
c. Install the SAS riser-card with the SAS expander card into the connector
on the system board, making sure that the alignment post goes through the
hole in the expander card. Press the riser card into place until the latch at
the rear of the card snaps closed.