Check Point Smart-1 Series Installing And Removing page 3

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When two PSUs are installed, they both must be of the same type and have
the same maximum output power.
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When two PSUs are installed, they both must receive the same input
voltages.
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When two identical PSUs are installed, power to the appliance is supplied
equally from both PSUs to maximize efficiency.
DC PSU
Item Description
1 Release latch
2 External power connector (to connect the DC power cables)
3 Internal power connector (to insert into the appliance)
4 Handle
5 Indicator LED
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