IBM Power System Series Manual page 163

Figure 139: Reconnecting the rear USB cable in the USB socket on the system backplane
30. Replace the I/O voltage regulator module in location P1-C23.
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.
SAS cables in the 9040-MR9 159