IBM System x3550 M5 Type 5463 Installation And Service Manual page 168

Figure 65. Mini-SAS HD (12Gb) and power cable connector location on the rear backplane
Figure 66. Mini-SAS HD (12Gb) and power cable routing
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IBM System x3550 M5 Type 5463: Installation and Service Guide
7. Connect the other end of the mini-SAS HD (12Gb) and power cables to the
2.5-inch hot-swap hard disk drive backplane and power connector.
8. Reinstall the cover (see "Replacing the cover" on page 127).
SAS/SATA power cable
SAS/SATA signal
cables