Hi All, New to this forum so excuse my ignorance of forum rules and regulations, etc. Sorry! I am having trouble transferring files to my SD card to then print. I am using the Ultimaker 2 Extended. I also am not able to print via USB. I've read that USB is not ideal but for some reason my printer isn't registering in CURA. Every time I hit print nothing happens. As far as the SD card goes, I have loaded several .stl files onto the card but when I plug it into the printer it does not read the .stl files. Any help/advice would be much appreciated as this is for school. Thanks!