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Question: Is it possible to use CYUSB3KIT-003 as a self-powered device?
Answer: In the current CYUSB3KIT-003 hardware design, the VBATT pin of FX3, used to operate the device in self-power mode, is NC. Since the VBATT pin is not brought out on to the kit, CYUSB3KIT-003 cannot be used as a self-powered device.