Old Simpletech external drive


My uncle has a old simpletech 500gb external drive that we are trying to see if there is any information on it. He just recently passed away and now trying to get it to be recognized on Windows 10 and Windows 10 is not even recognizing it at all. Any suggestions? It is not even being listed in device manager, but at least there is power getting to it, since the red light is flashing in the back.