Figure 21. Removing and installing the processor heat sink1. heat sink 2. retention sockets (2)3. retention screws (2) 4. processorCAUTION: The processor is held in its socket under strong pressure. Be aware that therelease lever can spring up suddenly if not firmly grasped.8. Position your thumb firmly over the processor socket-release lever near the unlock icon andrelease the lever from the locked position by pushing down and out from under the tab.9. Similarly, position your thumb firmly over the processor socket-release lever near the lock iconand release the lever from the locked position by pushing down and out from under the tab. Rotatethe lever 90 degrees upward.51