Lenovo ThinkSystem ST550 7X09 Maintenance Manual page 25

Table 3. Components on the front panel
Callout
1
Power button with power status LED (green)
3
Network activity LED (green)
5
System error LED (yellow)
7
XClarity Controller USB connector
1 Power button with power status LED
You can press the power button to turn on the server when you finish setting up the server. You also can hold
the power button for several seconds to turn off the server if you cannot turn off the server from the operating
system. The power status LED helps you to determine the current power status.
Status Color
Solid on Green
Slow blinking Green
(about one flash
per second)
Fast blinking Green
(about four
flashes per
second)
Off None
2 Simple-swap-drive activity LED
The simple-swap-drive activity LED is only for server models with simple-swap storage drives.
Status Color
Solid on Green
Off None
3 Network activity LED
The network activity LED on the front panel helps you identify the network connectivity and activity.
Status Color
On Green
Blinking Green
Off None
4 System ID button with system ID LED
Use this system ID button and the blue system ID LED to visually locate the server. A system ID LED is also
located on the rear of the server. Each time you press the system ID button, the state of both the system ID
LEDs changes. The LEDs can be changed to on, blinking, or off. You can also use the Lenovo XClarity
Description
The server is on and running.
The server is off and is ready to be powered on (standby state).
The server is off, but the XClarity Controller is initializing, and the server is not ready
to be powered on.
There is no ac power applied to the server.
Description
The simple-swap drive is active.
The simple-swap drive is not active.
Description
The server is connected to a network.
The network is connected and active.
The server is disconnected from the network.
Callout
2
Simple-swap-drive activity LED (green)
4
System ID button with system ID LED (blue)
6
Opening for temperature sensor
8
USB 3.0 connector
Chapter 2
. 17
Server components