protel99se，在局域网多机共用同一个sn时，会弹出警告窗口。如每台计算机用不同的sn，或者每台计算机录入多个不同的sn，则可以免除此烦扰。此为protel99se的多个sn,可用。-protel99se, multi-machine in the LAN share the same sn, it will pop up a warning window. If each computer with different sn, or each computer a number of different input sn, you can remove this annoyance. This is protel99se multiple sn, free.