Xiaomi A4 Gigabit edition GPIOS and UART?


I'd like to try adding some infrared input and zigbee input/output (via cc2530) on my xiaomi 4A Gigabit edition (which already runs OpenWRT).

I have not opened it yet (I don't have it there), and I wonder if enough GPIO and/or UART connection points are available on the board to connect the zigbee module and / or the IR receiver ?