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• Ensure that cables are installed in an orderly way to reduce the risk of cable damage when replaceable
units are removed or inserted.
Figure 67. Connecting the SAS cables
Powering on the 5U expansion enclosure
Use the following procedure to provide power to the 5U expansion enclosure as part of the initial
installation process or after a service procedure.
Before you begin
Important: Before you connect the power cables to the rear of the enclosure, always check that the
expansion enclosure is secured in the rack. If needed, tighten the thumbscrews on the front of the
enclosure (
2
in Figure 68 on page 60) to ensure that the enclosure drawer does not roll open.
About this task
The 5U expansion enclosure has two power supply units (PSUs) that are accessible from the front of the
enclosure (
4
in Figure 68 on page 60). As the figure also shows, the PSUs are covered by the 1U fascia
(
5
).
Chapter 2. Installing the system hardware 59
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