The is a unique identification code required to activate and license the PS-300B Sewing Data Programming Software. This software is a specialized tool used to create, edit, and modify sewing patterns for Brother industrial electronic sewing machines on a personal computer. Where to Find Your Key ID

: If the software is already installed, you can find the Key ID by going to the and selecting Version Information Industrial Sewing Machine | Brother Installation and Usage Tips Administrative Access

Are you currently trying to or are you looking to upgrade an existing version of the software? Upgrade Procedure - Industrial Sewing Machine | Brother

If you need the key ID for a Brother PS-300B (sewing/serger/embroidery controller or similar accessory), here's how to locate it and what to include in your post when asking for help or replacement keys.