Lenovo ThinkCentre 8289 Hardware Replacement Manual page 17

4. While holding the rear of the computer chassis down, pull upward on the
handle provided to remove the PCI riser assembly and any adapters that are
currently installed.
5. Disconnect the cables connected to the system board. See "Identifying parts on
the system board" on page 4.
Important
Note the cable routing. It is important to route the cables the same way
after you install the new system board.
6. Using the two blue handles provided, lift the system board assembly out of
the computer.
Chapter 2. Replacing hardware
9