This review evaluates the PS-300B Key ID (and the system it supports) based on build quality, functionality, software integration, and overall value for professionals.
The Key ID is not a physical part of a sewing machine or typewriter; rather, it is a software license identifier. J&B Sewing Machines Original Packaging
: A common point of frustration for technicians is receiving an "Invalid key ID" message. This often happens if an old version of the software is still lingering on the system. To fix it, you usually have to completely uninstall the previous version before the Key ID from your CD case will be accepted by the new installation . Quick Facts for Troubleshooting