Supplying USB Power - Raspberry Pi Forums

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based on i've read, expecting rpi power on when plugged in micro usb plug connected 5v power source. plan last step. surprise, powered on when plugged in std usb plug 1 of 2 usb ports on rpi , plugged powered usb hub. surprised, unplugged immediately. (1). whats up? (2). did screw up?

no - means hub back-powers (many although technically against usb spec). if have rev 2 board or rev 1 without polyfuses on usb sockets can power pi in way.


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