SUPER MICRO Computer 6015B-Ni - Manual (Page 29)

Chapter 3: System Interface
3-3
NIC2: Indicates network activity on LAN2 when fl ashing.
NIC1:
Indicates network activity on LAN1 when fl ashing.
HDD: Indicates IDE channel activity when fl ashing.
Power:
Indicates power is being supplied to the system's power supply units.
This LED should normally be illuminated when the system is operating.