Dell OptiPlex GX260 - Manual (Page 91)

1 retention arm
2 filler bracket
3 adapter bracket
4. Slide the adapter bracket down over the card-slot opening, and lower the retention arm, securing the adapter bracket.
5. Route the serial adapter cable under the card cage, and attach the cable to the connector on the system board (labeled
SER2).
Replacing the Card Cage and Connecting the Cable