It defines features similar to those addressed by PoweredUSB , but without requiring the use of proprietary connectors .
In 2012 , the USB - IF released the USB Power Delivery Specification ( USB PD ) as an optional part of the USB 2.0 and 3. x specifications .
USB defines features similar to those addressed by PoweredUSB , but without requiring the use of proprietary connectors .
In 2012 , the USB - IF released the USB Power Delivery Specification ( USB PD ) as an optional part of the USB 2.0 and 3. x specifications .