LEDs on the Sun Fire V60x server rear panel include: NIC2 Network Activity LED, NIC2 Network Speed LED, Power Supply Status LED NIC1 Network Activity LED, NIC1 Network Speed LED, POST LEDs (4), ID LED, System Status LED. LEDs on the Sun Fire V65x server rear panel include: NIC2 Network Activity LED, NIC2 Network Speed LED, NIC1 Network Activity LED, NIC1 Network Speed LED, POST LEDs (4), ID LED, System Status LED, Power Supply Status LEDs (Redundant Power Supplies). On both servers, LEDs are on main board, visible through rear of chassis.