Server controls, LEDs, and power
This section describes the controls and light-emitting diodes (LEDs) and how to turn
the server on and off.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of
the hot-swap server models.
USB connectors
Power-control button
Front
information
panel
CD or DVD-eject button
CD or DVD drive
activity LED
(green)
System power LED
Hard disk drive activity LED
System error LED
Hot-swap hard disk
drive activity
LED (green)
Hot-swap hard disk
drive status
LED (amber)
10 System x3400 Types 7973, 7974, 7975, and 7976: User’s Guide
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