System Front View
Front Control Panel (Item 3 Details)
System Rear View
Rear I/O Ports
LAN LED Indicators
Dedicated IPMI LAN LED
BMC Heartbeat LED
If this LED is blinking green, then the BMC is functioning normally. This is under the PCI-e riser board, so one must look through the back I/O ports/shield to view whether the LED is active while the system has power.