Hi Thomas,

Currently, the main version to use is 5.1.3.X for SNMPv2 integrations and 6.1.1.X for SNMPv3 integrations.

For a detailed description of the different ranges, please have a look at the driver help page.
The driver help can be accessed from the element context menu (upper left corner of your element card) or through the context menu on the driver name in the protocols and templates app.