IBM Power Systems 9008-22L Manual page 29

Figure 12. Lowering the removal tool onto the system processor module
c. With the removal tool sitting on top of the system processor module, push down on the ring (A)
slightly so that the blue tabs (B) snap outward and the jaws engage with the system processor
module (C) as shown in Figure 13 on page 14. Make sure that both of the tool jaws are locked onto
the system processor module by pushing down on the tool.
Important: Do not press the blue release tabs until directed to do so later.
13
System processor modules