IBM x3550 - System - 7978, Problem Determination And Service Manual

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Server controls, LEDs, and connectors
This section describes the controls, light-emitting diodes (LEDs), and connectors on
the front and rear of the server.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of
the server. This configuration supports up to four 2.5-inch hot-swappable hard disk
drives.
2.5-inch hard disk drives
Video connector
USB 4 connector
USB 3 connector
Rack release latch
Rack release latch
Operator information
panel
CD-RW/DVD drive activity LED
Hard disk drive
activity LED
Hard disk drive
status LED
CD-RW/DVD eject button
The following illustration shows the controls, LEDs, and connectors on the front of
the server. This configuration supports up to two 3.5-inch hot-swappable hard disk
drives or two 3.5-inch simple-swap SATA hard disk drives.
Operator information panel
Rack release latch
Rack release latch
CD-RW/DVD eject button
CD-RW/DVD drive
activity LED
3.5-inch hard disk drives
Video connector
USB 4 connector
USB 3 connector
Hard disk drive
activity LED (SAS model)
Hard disk drive
status LED (SAS model)
Note: The locations of the controls, LEDs, and connectors vary, depending on the
hardware configuration that you have.
v
Operator information panel: This panel contains controls and LEDs about the
status of the server.
Power-on
LED (green)
System
locator
LED (blue)
Power-
control
button System
information
LED (amber)
System-error
LED (amber)
Release
latch Hard drive
activity
LED (green)
The following controls and LEDs are on the operator information panel:
– Power-on LED: When this green LED is lit and not flashing, it indicates that
the server is turned on. When this LED is flashing, it indicates that the server
Chapter 1. Introduction
5