This post is dedicated on showing how AutoCount USB Key Server works with AutoCount Backup Server in allowing users to authenticate their license.
On how to register the USB Key Server with the Backup Server, please navigate to this link AutoCount Backup Server
Local Client and Server Configuration Scenario
Remote Client and Server Configuration Scenario
In conclusion, we can say that the AutoCount USB Key Server follows one rule that is a single USB Key Server can only allow SQL Servers in one PC (which may contain multiple instances and databases) to validate their license. As such if the deployment requires SQL Servers in multiple PCs to validate their licenses, the user will be required to purchase additional USB Key Server license in order to validate each PC.