Do I need a special power supply to support Suspend to RAM? How much standby current should my power supply be able to supply in order to support Suspend to RAM?
The power supply used must provide enough standby current to support the needs of all wake capable devices in the system. For proper system operation, the power supply must provide at least that amount of standby current used by the desktop board devices and all externally connected wake devices. This includes both components on the Intel® Desktop Board D820LP, non-self powered USB devices and your add-in cards. To calculate this amount, add up the amount of standby current required by the various components which can wake the system from the ACPI S3 (STR) state. For further details on how to determine the necessary stand by current, consult the Intel® Desktop Board D820LP TPS and the Intel® Desktop Board D820LP DBSU.
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