Sambar Server 5.0
1) Run the app, open a browser, enter your own IP. Name: admin, pass leave blank 
2) 2nd paragraph, where it says "System Administration. The System Administration page provides..". Select that link. 
3) New window, select the logo "Pro License" enter the serial. 
4) Close browser, app, restart both, return to the same page you entered the serial and you'll see it is regged. 
 
S/N: 120E87DE64FEE5E1C9E8BB69CC070085