I have a Bernina 730 and it uses ART files..if you find designs that aren't in ART..some places will make them ART files for you at know charge. I was told that if you use other files..that the machine can read them..but sometimes the designs don't stitch out as nice. I use Oregon Patchworks and Embroidery Mall. Once I purchased one set of designs at Embroidery Mall and it didn't come in ART files and they changed it for me.