Lenovo x3300 M4 7382 Installation And Service Manual page 32

The following illustrations show the LEDs on the rear of the server.
• AC power LED: Each power supply has an ac power LED. When the ac power LED is lit, it indicates that
sufficient power is being supplied to the power supply through the power cord. During normal operation,
both the ac and dc power LEDs are lit. For any other combination of LEDs, see "Server controls, LEDs,
and power" on page 16.
• DC power LED: Each power supply has a dc power LED. When the dc power LED is lit, it indicates that
the power supply is supplying adequate dc power to the system. During normal operation, both the ac
and dc power LEDs are lit. For any other combination of LEDs, see "Server controls, LEDs, and power" on
page 16.
• Power-supply error LED: When the power-supply error LED is lit, it indicates that the power supply has
failed.
Note: In a redundant-Power supply system, the power supply 1 is the default/primary power supply. If
power supply 1 fails, you must replace the power supply immediately.
• USB connectors: Connect a USB device to any of these connectors.
• Ethernet activity LEDs: When these LEDs are lit, they indicate that the server is transmitting to or
receiving signals from the Ethernet LAN that is connected to the Ethernet port.
• Ethernet link LEDs: When these LEDs are lit, they indicate that there is an active link connection on the
10BASE-T, 100BASE-TX, or 1000BASE-TX interface for the Ethernet port.
• Ethernet connectors: Use either of these connectors to connect the server to a network. When you use
the Ethernet 1 connector, the network can be shared with the IMM through a single network cable.
Power-supply LEDs
This section shows the power-supply LEDs on the server.
The following illustration shows the location of the power-supply LEDs (redundant power supplies) on the
rear of the server.
20
System x3300 M4 Installation and Service Guide