IBM Power System 9040-MR9 Manual page 75

Figure 62. Replacing the I/O voltage regulator module
12. Replace the standby voltage regulator module in location P1-C22.
a) With the levers (A) in the open position, hold the voltage regulator module by its levers and lower
the voltage regulator module into its slot in the system. Refer to the following image.
b) Gently push the voltage regulator module into its connector.
c) Rotate the levers in the direction shown and press down on the latches to secure the voltage
regulator module in its slot.
System backplane for the 9040-MR9 61