IBM Power System 5105-22E Manual page 39

Figure 24. Replacing the disk drive backplane
3. Carefully tighten each of the three captive thumbscrews (C) to secure the disk drive backplane to the
system's chassis, as shown in Figure 24 on page 25.
4. Using your labels, reconnect the signal cable (A) and the power cable (B) to the disk drive backplane
as shown in Figure 25 on page 26.
Note: If your system has a backup power module, wait to replace the power cable until directed to do
so in a later step.
Push the connectors in until the latch clicks.
Drive backplanes for the 5105-22E, 9008-22L, 9009-22A, 9009-22G, or 9223-22H 25