"I see that the product description has (US) in brackets. Does this mean that i cannot load my own maps on this model, since i live in Trinidad?"
yes, you can load your own maps on this model. I live in venezuela and i can load my map. you need the mapsource software and your country map . in case of venezuela the load is free and only pay collaboration to maintain the map update. other country need to pay to obtaine original map.