IBM 8685 xSeries 255 Installation Manual page 22

10. If you have not yet installed a RAID or SCSI adapter, install it now. Otherwise,
11. Disconnect the SCSI signal cable from the internal SCSI connector (J15) on
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IBM xSeries 255 Type 8685: Installation Guide
7. Unlock the metal-hinge latch that secures the shuttle assembly in place. Then,
slide the shuttle assembly toward the rear of the server, approximately 10 cm
(4 in.).
Shuttle latch
8. Disconnect the internal integrated drive electronics (IDE) signal cable from the
IDE system-board connector. Disconnect the diskette-drive signal cable and
front-fan signal cable from the corresponding system-board connectors. See
the Option Installation Guide on the xSeries Documentation CD for cable
locations.
9. If the server is a tower model, lift the shuttle assembly from the server.
continue with the next step. See the preceding adapter-installation procedure
in this chapter and your RAID or SCSI adapter option documentation for
additional information about installing a RAID or SCSI adapter in your server
and connecting the SCSI cables to a RAID or SCSI adapter.
the system board.
Adapter
External
SCSI A (J14)
Internal
SCSI B (J15)