Hi, I'm running test lab with Dell 2950 running ESXi 5.1 with Open Manage installed on it, Virtual Machine running vCenter Server 5.1 with open manage console (v 7.2.0) and Virtual Machine running PRTG (newest version). I downloaded MIBs for this Dell and converted using Paessler MIB Importer V2. Copied converted files to snmplib and custom MIB is showing on SNMP Library list. When I try to add any imported Dell library I receive following error (No available interfaces on this device (code: PE049)) I receive the same error when I try to add SNMP Dell Hardware. When I add SNMP Dell PowerEdge System Health I can add it but data is not received from the server (error: No such object (SNMP error # 222)). I'm not sure if this is PRTG or Dell issue but I can collect information from Dell using VMware sensors (VMware Hardware Status etc).