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-This parameter allows the user to set the link (interface) power management.
-There are 3 possible options:
-Value Effect
-min_power Tell the controller to try to make the link use the
- least possible power when possible. This may
- sacrifice some performance due to increased latency
- when coming out of lower power states.
-max_performance Generally, this means no power management. Tell
- the controller to have performance be a priority
- over power management.
-medium_power Tell the controller to enter a lower power state
- when possible, but do not enter the lowest power
- state, thus improving latency over min_power setting.