Enumeration Case



kIOPMLowPower = 0x00010000


Indicates device is in a low power state. May be bitwis-OR'd together with kIOPMDeviceUsable flag, to indicate the device is still usable.

A device with a capability of kIOPMLowPower may: Require either 0 or kIOPMPowerOn from its power parent Offer either kIOPMLowPower, kIOPMPowerOn, or 0 (no power at all) to its power plane children.

Useful only as a Capability, although USB drivers should consult USB family documentation for other valid circumstances to use the kIOPMLowPower bit.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software