We have 2 of these and 2 different engineers trying to get them to work. They work as serial converters, but both the Reset and the GPIO signal happen at exactly the same time, for this product to work the reset should go low, then the GPIO 0 control go low, then reset should go high , and after a delay the GPIO control should go high. But both are occurring at exactly the same time. I am using a 200MHz storage scope to test. (Rigol DS2202). Has the device been shipped without the convertor being programmed perhaps?