It would be a good idea to open a support ticket. I am running out of suggestions on this one.
I just setup a new install of OpenManage 2.1.  During the first “Discover and Inventory” of one of my subnets, I’m getting several “Unclassified Devices”.  These appear to be switches and out of band servers, however, I only want to discover and display “Servers with OMSA”, “ESXi Hosts” and “PowerVault MD Arrays” devices.  I can’t seem to find a setting for eliminating the Unclassified Devices.   Thank you.
Unclassified Devices