Dell OptiPlex SX270 User Manual page 75

11. Remove the heat sink.
a. Remove the two securing brackets, if present, by pressing the tabs together and lifting the brackets up.
1 tabs (two on each
securing bracket)
2 securing brackets (2)
b. Remove the memory module (see
c. Press the lever on the retention base until the heat sink is released.
1 heat sink
2 retention base
3 lever
d. Gently lift the heat sink from the microprocessor.
NOTICE: Lay the heat sink down with the thermal material facing upward.
NOTICE: Be careful not to bend any of the pins when you remove the microprocessor. Bending the pins can permanently damage the microprocessor.
12. Pull the release lever straight up until the microprocessor is released, and then remove the microprocessor from the socket.
"Removing Memory") closest to the heat sink.