These are CD-ROMs with multiple formats and include most common household formats. These are NOT memory cards! You will need to have a way to get the designs into your embroidery machine. Note: NOT for use with Windows 7/8 and/or 64-bit machines. Designs can be installed from the CD-ROM onto a WIN XP machine and then transferred via USB, LAN, or by writing the files to a data CD, to a WIN 7/8/64-Bit machine as needed. Alternatively, computer savvy users can run their WIN 7/8 machine in XP-MODE.