A SERVICE OF

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Cisco UCS C420 Server Installation and Service Guide
OL-27640-01
Chapter 3 Maintaining the Server
Status LEDs and Buttons
1-Gb Ethernet link status Off—No link is present.
Green—Link is active.
Green, blinking—Traffic is present on the active link.
Identification
Off—The identification LED is not in use.
Blue—The identification LED is activated.
Table 3-2 Rear-Panel LED States (continued)
LED Name State