3-5
Cisco UCS C200 Server Installation and Service Guide
OL-20732-02
Chapter 3      Maintaining the Server
  Status LEDs
Table 3-2 describes the possible states and interpretations for the LEDs that are shown in Figure 3-3.
Ta b l e  3-2 Rear Panel LEDs  
LED Name State
Power supply status   • Off—No AC power is present in any power supplies.
  • Green—This power supply is operating properly in main power 
mode.
  • Green, blinking—This power supply is operating properly in 
standby power mode.
  • Amber, flashing—There is no AC power present in this power 
supply.
  • Amber and Green, blinking—This power supply has reached a 
Warning over-temperature condition: 176 °F (80 °C). The power 
supply auto-recovers from this condition when the temperature is 
within specification again: 167 °F (75 °C)
  • Amber—This power supply has failed. This could be because the 
power supply has reached a Critical Shutdown over-temperature 
condition: 194 °F (90 °C). The power supply auto-recovers from 
this condition when the temperature is within specification again: 
167 °F (75 °C).
See the “Connecting and Powering On the Server (Standalone Mode)” 
section on page 2-9 for definitions of these power modes.
Locator   • Off—The Locator LED is not in use.
  • Blue, flashing—The Locator LED button on the front panel was 
pressed and the Locator LED flashes on the front and rear panels 
to help you find the server in a rack.
Note The 10/100 Ethernet link status LED and the speed LED must be read in 
combination for the following interpretations.
10/100 Ethernet speed (left)
10/100 Ethernet link status 
(right)
  • Link status off + speed off—No link is present on this port.
  • Link status off + speed solid green—A half-duplex, 10-Mbps link 
is present.
  • Link status amber + speed solid green—A half-duplex, 100-Mbps 
link is present.
  • Link status off + speed blinking green—A full-duplex,  
10-Mbps link is present.
  • Link status amber + speed blinking green—A full-duplex, 
100-Mbps link is present.