IBM x3650 M3 Installation And User Manual page 102

Figure 84. Disconnecting SAS signal cables
Figure 85. SAS controller remova
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System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
8. Remove the SAS controller assembly from the server; then, remove the SAS
controller from the SAS riser-card. See "Removing a ServeRAID SAS controller
from the SAS riser-card" on page 134 for instructions.
9. Remove the SAS controller front retention bracket from the server.