Cisco UCS C220 M4

3-5
Cisco UCS C220 M4 Server Installation and Service Guide
OL-32473-01
Chapter 3 Maintaining the Server
Status LEDs and Buttons
5 1-Gb Ethernet link status • Off—No link is present.
• Green—Link is active.
• Green, blinking—Traffic is present on the active link.
6 Rear unit identification
• Off—The unit identification LED is not in use.
• Blue—The unit identification LED is activated.
7 Power supply status AC power supplies:
• Off—No AC input (12 V main power off, 12 V standby power off).
• Green, blinking—12 V main power off; 12 V standby power on.
• Green, solid—12 V main power on; 12 V standby power on.
• Amber, blinking—Warning detected but 12 V main power on.
• Amber, solid—Critical error detected; 12 V main power off.
Table 3-2 Rear Panel LEDs, Definitions of States (continued)
LED Name State