WIN 2003 SVR SBS CAL USER 5LTU (CAL ONLY) EN FR IT With user CALs, you acquire a CAL for individuals who are given named access to your server. Licensed users can access the server from any device. User CALs might make the most sense for an organization that has many roaming employees who need access to the corporate network from mobile devices or employees who use multiple devices to access the network. You can reallocate a user CAL if a reassignment is permanent. You can also temporarily reassign a user CAL if the user is on leave or the device is disabled.