IBM System x3690 X5 Installation And User Manual page 96

12. Connect the other SAS signal cables to port 1 on the ServeRAID expansion
If you have other devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 112.
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System x3690 X5 Types 7147, 7148, 7149, and 7192: Installation and User's Guide
Cable ties
Microprocessor
air baffle
SAS signal cable
adapter to port 0 on the drive backplane; then port 2 on the expansion
adapter to port 1 on the drive backplane, port 3 on the expansion adapter to
port 2 the drive backplane, and port 4 on the expansion adapter to port 3 on
the drive backplane (depending on the drive backplane you install in the
server).
Cable tie
loops
SAS signal
cable guide
Scalability
connector
cover
Adapter