IBM Power System 9040-MR9 Manual page 82

Figure 69. Placing the system into the operating position
20. To replace the disk drive backplane, complete the following steps:
a) Using two hands, grasp the disk drive backplane where indicated by the blue squares in the
following figure. Partially insert the disk drive backplane straight into the front of the system.
Do not yet fully insert the disk drive backplane; leave about a 2.5 cm (1 in) gap at the rear of the
disk drive backplane.
68 Power Systems: System backplane