For physical versions (1.0 or newer), the Key ID and its accompanying password are printed on the original CD-ROM case .
: Because these codes are unique to each licensed copy of the software, Brother does not provide a universal "default" Key ID. If you have lost your case, you must contact an authorized Brother Industrial Sewing Machine dealer for a replacement license or recovery assistance. Industrial Sewing Machine | Brother Common Installation Issues "Invalid Key ID or Password"
The first step would be to consult the user manual for the Brother PS300B. Manuals often contain detailed information about the device's functions, troubleshooting tips, and sometimes a glossary of terms.
For instance, if you're trying to program a custom key or button on the label maker and are asked for a "Key ID," you would typically refer to the device's manual or on-device menu to find or set this ID.
