Where are the PLI-4510 utilities?
You can find all the available applications and files on the official website of LevelOne. I have accessed the website and narrowed down the results list based on the products supported by the developer/manufacturer.
Access the page here: http://global.level1.com/search.php?modelstr1=PLI&modelstr2=4510&submittype=0&stype=0&searchfrom=0