Flashing rapidly (4 times per second): The server is turned off and is not ready to be turned on. The
power button is disabled. This will last approximately 5 to 10 seconds.
Flashing slowly (once per second): The server is turned off and is ready to be turned on. You can press
the power button to turn on the server.
On: The server is turned on.
2 Drive activity LED (green): Each hot-swap drive comes with an activity LED. If the LED is lit, it indicates
that the drive is powered, but not actively reading or writing data. If the LED is flashing, the drive is being
accessed.
3 Network activity LED (green): When this LED flickers, it indicates that the server is transmitting to or
receiving signals from the Ethernet LAN.
4 System ID button/LED (blue): Use this blue LED to visually locate the server among other servers. This
LED is also used as a presence detection button. You can use Lenovo XClarity Administrator to light this LED
remotely.
5 System-error LED (yellow): When this yellow LED is lit, it indicates that a system error has occurred.
Rear view
The rear of the server provides access to several components, including the power supplies, PCIe adapters,
serial port, and Ethernet port.
Figure 11. Rear view - Non-redundant power supply model
Table 8. Rear view - Non-redundant power supply model
1 PCIe slot 1 6 Ethernet connector 1 (shared with XCC network port)
2 PCIe slot 2 7 Dedicated XClarity Controller (XCC) network connector
3 Power connector
8 VGA connector
4 USB 3.1 Gen 2 connectors 9 Serial connector
5 Ethernet connector 2
Figure 12. Rear view - Redundant power supply model
Chapter 2. Server components 17
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