Lenovo ThinkServer TD200x - Manual (Page 32)

Power-control button: Press this button to turn the server on and off manually. A
power-control-button shield comes with the server. You can install this disk-shaped
shield to prevent the server from being turned off accidentally.
Hard-disk drive activity LED: When this LED is flashing, it indicates that a hard
disk drive is in use.
System-locator LED: Use this LED to visually locate the server among other
servers.
System-information LED: When this LED is lit, it indicates that a noncritical event
has occurred.
System-error LED: When this LED is lit, it indicates that a system error has
occurred.
USB 1 and 2 connectors: Connect USB devices to these connectors.
DVD-eject button: Press this button to release a CD or DVD from the DVD drive.
Hard-disk drive status LED: On some server models, each hot-swap hard disk
drive has a status LED. When this LED is lit, it indicates that the drive has failed. If
an optional RAID controller is installed in the server, when this LED is flashing
slowly (one flash per second), it indicates that the drive is being rebuilt. When the
LED is flashing rapidly (three flashes per second), it indicates that the controller is
identifying the drive.
Hard-disk drive activity LED: When this LED is flashing, it indicates that the drive
is in use.
Operator information panel
The following illustration shows the LEDs on the operator information panel on the
front of the server.
16 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Installation and User Guide