IBM System x3550 M5 Type 5463 Installation And Service Manual page 229

Figure 130. 4 x 3.5-inch simple-swap hard disk drive backplate assembly installation
3. Connect the signal and power cables to the system board. Route the signal
cable from the drive backplane along the chassis and connect it to the
SAS/SATA signal connector. Then, route the power cable from the drive
backplate assembly along the chassis and connect it to the simple-swap SATA
power connector. The following illustration shows the cable routing and
connectors for the 2.5-inch and 3.5-inch backplate assemblies.
4 x 2.5-inch hard disk drive backplate
Chapter 5. Removing and replacing components
213