iOS 4.2 reduces the maximum power output of the iPad Camera Connection Kit’s USB adapter, essentially breaking compatibility with some cameras and other devices, according to a new report. 9 to 5 Mac claims that Apple has reduced the maximum amount of power that the iPad’s 30-pin connector can emit from 100mA to 20mA, leaving many non self-powered devices, including keyboards, microphones, flash drives, and some cameras unable to connect. According to the report, connecting such a device under iOS 4.2 results in an alert that says “The connected USB device requires too much power.” As noted in the report, it is unknown whether this is a bug or a deliberate change by Apple, nor whether it will be remedied in a future software update.
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