Lenovo ThinkCentre M58 9960 Hardware Manual page 107

The failing system board must be returned with a microprocessor socket cover to
protect the pins during shipping and handling.
To install the microprocessor socket cover:
1. Remove the microprocessor from the microprocessor socket. See "Replacing the
2. Close the microprocessor retainer and lock it into position with the small
3. Insert the tabs 1 of the socket cover into the hinged side of the socket, and
Figure 13. Tabs on the microprocessor socket cover (bottom view)
Figure 14. Installing the microprocessor socket cover
microprocessor" on page 96.
handle.
then press the other side of the socket cover downward until the tabs 2 snap
into position.
Chapter 8. Replacing FRUs - Tower computers
101