PCB version not incremented on U1 PCA9500 IO0 and IO1 pins
For the PCBv2 version, these pins (IO0 and IO1) should have change: IO0 tied to VCC IO1 tied to GND
For the PCBv2 version, these pins (IO0 and IO1) should have change: IO0 tied to VCC IO1 tied to GND