You can operate ATHENA 2018 as a single license or as a network license.
If you want to operate ATHENA as a single license, you need a hardware protection plug (hardware lock) for each workstation.
If you wish to operate ATHENA 2018 as a network license (floating license), you need a hardware protection plug for the server (here you must also install a license manager).
Hardware protection plugs are only available for USB slots.
ATHENA 2018 is available in a 32-bit version (only until AutoCAD 2016) and as a 64-bit version. The installation program automatically detects your environment and installs the appropriate version.
32-bit systems are not recommended due to their inadequate performance. It is essential to use a 64-bit system for a professional, powerful application.