5. If you are instructed to return the Ethernet adapter, follow all packaging
instructions, and use any packaging materials for shipping that are supplied to
you.
Installing the optional two-port Ethernet adapter
To install the Ethernet adapter, complete the following steps:
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 167.
2. Remove the cover (see “Removing the cover” on page 174).
3. Attach the rubber stopper on the location as shown in the illustration.
4. Remove the Ethernet adapter filler panel on the rear of the chassis (if it has
not been removed already).
5. Install the two standoffs on the system board.
6. Insert the bottom tabs of the metal clip into the port openings from outside the
chassis.
218 IBM System x3550 M3 Types 4254 and 7944: Problem Determination and Service Guide