Moved this from the Actions center to Lansweeper Questions. Please note that the Actions center is for posting finished Lansweeper actions, not questions.
In regards to your question: the model of SNMP enabled devices is determined by your asset mapping configuration under Configuration\Website Management\Asset Mapping. Modify the model setting of the relevant OID to have all assets with the specified OID identified as the model of your choice. Alternatively, you can manually override the model information of individual assets, e.g. by hitting the Edit Asset button on asset pages.