1. the system could be equipped with two power supplies. each power supply needs its own power cable.
2. if your system is equipped with one power supply, connect the power cable to the power receptacle. a second power receptacle is present when a second (redundant) power supply has been added to the system drawer. see the following illustration.
this product is equipped with a three-wire power cable and plug for the user’s safety. use this power cable with a properly grounded electrical outlet to avoid electrical shock.
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