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About Your System 21
Power Indicator Codes
The power supplies have indicators that show whether power is present or
whether a power fault has occurred.
• Not lit—AC power is not connected.
• Green—In standby mode, a green light indicates that a valid AC source is
connected to the power supply and that the power supply is operational.
When the system is on, a green light also indicates that the power supply is
providing DC power to the system.
• Amber—Indicates a problem with the power supply.
Indicator Indicator Code
Link and activity
indicators are off
The NIC is not connected to the network.
Link indicator is green The NIC is connected to a valid network link at
1000 Mbps.
Link indicator is amber The NIC is connected to a valid network link at 10 or
100 Mbps.
Activity indicator is
green blinking
Network data is being sent or received.
book.book Page 21 Wednesday, February 17, 2010 6:17 PM