Update the firmware to the latest version, this issue was resolved in 5.1.1.7 [URL] 
Hi, We have installed OpenMange Essentials to manage our Dell hardware (PowerEdge servers, M1000e chassis' and PowerConnect switches. We have configured SNMP inventory and discovery for M6220 and M8024 switches, but M8024 ones don't show their service tag (other inventory items are ok).  M6220 inventory is complete. SNMP community used for discovery is a read only community. Where is the mistake? Thanks in advance for your suggestions Moreno 
PowerConnect M8024 and OpenManage Essentials 1.2.1