Lenovo IdeaCentre K450 Desktop - Manual (Page 37)

a. Remove the screw that secures the graphics latch to the chassis and open it.
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b. Remove the graphics card by pulling it straight out of the connector.
Step 3. Install the new adapter into the same adapter connector.
Step 4. Turn the graphics card latch to the closed position and secure it with the screw.
Step 5. Connect the two graphics cards with the Duo-graphics cards connector and reattach the
Duo-graphics cards fixing bracket to the chassis. (For models with Duo-graphics cards only)
Step 6. Reattach the computer cover.
Replacing the TV-Tuner card
Note: For this procedure, it helps to lay the computer on a flat, stable surface.
Chapter 8 . Replacing hardware 31