Operator Information Panel - Lenovo System x3550 M4 Installation And Service Manual

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• USB connectors: Connect a USB device, such as a USB mouse or keyboard to any of these connectors.

Operator information panel

The following illustrations show the controls and LEDs on the advanced operator information panel and the

operator information panel depending on your server model.

Figure 7. Advanced operator information panel

Figure 8. Operator information panel

• Power-control button and power-on LED: Press this button to turn the server on and off manually. The

states of the power-on LED are as follows:

Off: Power is not present or the power supply, or the LED itself has failed.

Flashing rapidly (4 times per second): The server is turned off and is not ready to be turned on. The

power-control 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-control button to turn on the server.

Lit: The server is turned on.

• Ethernet activity LEDs: When any of these LEDs is lit, they indicate that the server is transmitting to or

receiving signals from the Ethernet LAN that is connected to the Ethernet port that corresponds to that

• System-locator button/LED: Use this blue LED to visually locate the server among other servers. A

system-locator LED is also on the rear of the server. This LED is used as a presence detection button as

well. You can use Systems Director or IMM web interface to light this LED remotely. This LED is controlled

by the IMM. The locator button is pressed to visually locate the server among the others servers.

• Check log LED: When this yellow LED is lit, it indicates that a system error has occurred. Check the event

log for additional information. See "Event logs" on page 133 for more information about event logs.

• System-error LED: When this yellow LED is lit, it indicates that a system error has occurred. A system-

error LED is also on the rear of the server. An LED on the light path diagnostics panel on the operator

Lenovo System x3550 M4 Installation and Service Guide