I purchased an LMX2581EVM and the User's Guide on the product page says that "the external USB interface board" can be used in place of the LPT connection. I assumed that the interface board would be included with the eval kit but I did not get one. My computer does not have an LPT connector, so I am stuck unless I can borrow another computer. Also, in searching the product page and the forums I'm not sure how to procure such a board.