Solved! Go to Solution.
OME communicates with an agent to determine classification. You may need to install an agent like OpenManage Server Administrator. There should be a matrix that lists supported agents on the OpenManage Essentials support page.
Dell EMC, Enterprise Engineer
Get support on Twitter @DellCaresPRO
If it is non-Dell hardware, MIB import only facilitates event formatting so that they become user understandable. It does not make them discover-able under a known device type.