IBM Power System 8247-42L Manual page 50

Figure 34. Removing dust and debris from the system processor module area
10. Prepare the system processor module for removal from the original system backplane.
a. Using the supplied removal tool, align the beveled corner (A) of the tool over the beveled corner
of the system processor module as shown in Figure 35 on page 33.
b. Lower the tool over the system processor module by ensuring the two guide pins (C) are inserted
into the alignment holes (B) on each side of the tool.
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System backplane