I believe you need the sentinel driver for the USB dongle which can be obtained through the link posted below. Make sure to properly download the file you need, meaning that you have to install the Windows driver named as Sentinel Driver or the Mac driver named UltraPro Driver.
Installation: Save the installation package, double click it and follow the on-screen instructions. In 99 % of the cases, the installation is automatic without user's intervention, but sometimes you have to configure some things in order to proceed.