A method and system for configuring a USB3 input/output port in a camera are disclosed. The method comprises responsive to an indication that a peripheral device is a non-USB3 device, remapping pins of the USB3 input/output port to a first predefined port configuration associated with an I2C protocol by remapping a RX1− pin to communicate a first I2C signal and remapping a RX1+ pin to communicate a second I2C signal, and responsive to successful authentication between the camera and the peripheral device via the I2C protocol, enabling communication with the peripheral device and remapping the pins of the USB3 input/output port to a second predefined port configuration compatible with operation of the authenticated peripheral device by remapping a TX2+ pin to communicate a first general purpose input/output signal and remapping a TX2− pin to communicate a second general purpose input/output signal.