Control Panel - Supermicro SYS-521C-NR User Manual

Control Panel

A power button and a UID button as well as status LEDs are located on the control panel
at the front of the chassis. The locations and descriptions of these buttons and LEDs are
provided below. See
Power Button
UID Button
Power LED
Power Fail LED
Features Description
The main power switch applies or removes primary power from the power supply to the
Power Button
server but maintains standby power.
The unit identification (UID) button turns on or off the blue light function of the Information
UID Button LED and a blue LED on the rear of the chassis. This is useful for finding a system in a rack
environment.
Steady on – Power on
Blinking at 4Hz – Checking BIOS/BMC integrity
Power LED Blinking at 4Hz and "i" LED is blue – BIOS firmware updating
Two blinks at 4Hz, one pause 2hz and "i" LED blue – BMC firmware updating
Blinking at 1Hz and "i" LED red – Fault detected
NIC LEDs Indicates network activity on a LAN when flashing.
Power Fail LED Indicates a power supply module has failed.
HDD LED Indicates activity on the hard drive when flashing.
Information LED Alerts operator to several states (noted in the table below).
Chapter 4 for details on the control panel connections.
NIC LED
Figure 1-1. Control Panel
Control Panel Features
11
Chapter 1: Introduction
HDD LED
NIC LED
Information LED