Lenovo THINKCENTRE 4485 - Manual (Page 106)

6. Lift the small handle 1 and open the retainer 2 to access the microprocessor 3 .
Figure 29. Accessing the microprocessor
7. Lift the microprocessor straight up and out of the microprocessor socket.
Figure 30. Removing the microprocessor
Notes:
a. Your microprocessor and socket might look different from the one illustrated.
98 ThinkCentre Hardware Maintenance Manual