Lenovo x3650 M5 Installation And Service Manual page 36

• Serial connector (optional): Connect a 9-pin serial device to this connector. The serial port is shared
with the integrated management module II (IMM2.1). The IMM2.1 can take control of the shared serial
port to redirect serial traffic, using Serial over LAN (SOL).
The following illustration shows the LEDs on the rear of the server.
System power LED
Locator batton / LED
Figure 20. LEDs rear view
The following illustration shows the LEDs on a dc power supply.
-48V return
• 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.
• AC power LED: Each hot-swap ac power supply has an ac power LED. When the ac power LED is
lit, it indicates that sufficient power is coming into the power supply through the power cord. During
typical operation, the ac power LED is lit. For any other combination of LEDs, see "AC power-supply
LEDs" on page 71.
• DC power LED: Each hot-swap ac 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 typical operation,
both the ac and dc power LEDs are lit. For any other combination of LEDs, see "DC power-supply
LEDs" on page 73.
• IN OK power LED: Each hot-swap dc power supply has an IN OK power LED. When the IN OK power
LED is lit, it indicates that sufficient power is coming into the power supply through the power cord.
During typical operation, both the IN OK and OUT OK power LEDs are lit. For any other combination of
LEDs, see "DC power-supply LEDs" on page 73.
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Lenovo System x3650 M5 Installation and Service Guide
Ethernet
Ethernet
link LED activity LED
System error LED
Ground
-48V
AC power
LED (green)
DC power
LED (green)
Power-supply
error LED (yellow)
Power input LED
Power output LED
Power error LED