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Figure 4-4. AC power connection
DC power
Connect the plug to each DC receptacle, making sure that the power cord is secure.
As soon as the cable is connected between the S55 and the power source, the chassis is powered-up; there
is no on/off switch.
Figure 4-5. DC power connection
Hot-swap units in a stack
You can add, remove, or swap units in an existing stack. The units in the stack and the new units can be
already powered up or they can be powered down.
All units in a stack must run the same version of the operating system. If you attempt to attach a unit with
a different version of the operating system to an existing stack, the CLI will display an error, and the unit
will not be added until you install compatible software.
The order in which the units come on-line or are added to or removed from the stack can affect how the
stack identifies them, and how the units identify themselves, influencing unit numbers, management
addresses, and other elements of the configuration file.
Install the S55
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