IBM 9009-22A Manual page 24

Figure 7. Disconnecting a BPM cable from the NVDIMM
e) Place the NVDIMM on an appropriate ESD surface.
f) Repeat steps "3.a" on page 8 through "3.e" on page 10 for any additional NVDIMMs.
4. Remove the backup power modules, if present. Otherwise, continue to the next step.
Note: The backup power module (BPM) is mounted in a standard drive carrier. The BPM is handled as
a drive in this procedure.
a) If your system has more than one BPM, record the location of both BPMs and decide which BPM
you want to remove first.
b) Provide slack in the BPM cable by pulling the BPM cable forward about 5 cm (2 in) in the direction
shown in Figure 8 on page 11.
10 Power Systems: Power Systems: Drive backplane