Dell OptiPlex 160L - Manual (Page 89)

6. Install the heat sink:
a. Place one end of the heat sink under the tab on one side of the retention base.
b. Lower the heat sink until the heat sink fits securely under the tab on the retention base.
c. Insert the securing clip by placing the notched end of the clip opposite the tab into the slot on the retention base. Press the securing clip tab and
lower the securing clip into place. Make sure that the notched ends of the securing clip are secured in the retention base slots.
7. Lower the airflow shroud over the heat sink.
8. Reconnect the cooling fan power cable to the FAN connector on the system board.
9. Reconnect the power cable to the 12VPOWER connector on the system board.
10. Replace the computer cover .
1 heat sink
2 retention base tab
3 retention base
1 securing clip
2 tab
3 slot
4 retention base
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.