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Chapter 2. General information 7
Hard disk drive activity light: Each of the hot-swap drives has a Hard Disk Activity
light. When this green LED is flashing, the controller is accessing the drive.
CD eject button: Push this button to release a CD from the drive.
CD drive activity light: When this light is on, it indicates that the CD-ROM drive is in
use.
Rear view
Ethernet 1 speed indicator: This green LED lights when the speed of the Ethernet
LAN that is connected to Ethernet port 1 is 100 Mbps.
Ethernet 1 link indicator: This green LED lights when there is an active link
connection on the 10BASE-T or 100BASE-TX interface for Ethernet port 1.
Advanced system management: The RS-485 ports (in and out) are used for creating a
system management bus between several servers.
Select light: This green LED lights when the monitor, keyboard, and mouse are
logically connected to this server. This light duplicates the Select button LED on the
front of the server.
Cable Chaining Technology OUT: This port is used to connect the server to a
keyboard, monitor, and pointing device. It is also used to connect multiple servers
together to share a single keyboard, monitor, and pointing device.
Serial port: Signal cables for modems or other serial devices connect here to the 9-pin
serial port connector.
Cable Chaining Technology IN: This port is used to connect multiple servers
together to share a single keyboard, monitor, and pointing device.
USB 2: Universal Serial Bus 2
USB 1: Universal Serial Bus 1
System-error light: This amber LED lights when a system error occurs. An LED on
the Light Path Diagnostic panel on the system board may also be on to further isolate
the error. This light duplicates the system error light on the front of the server.
Ethernet 1 speed
indicator (green)
Ethernet 2 speed
indicator (green)
Ethernet 1 link
indicator (green)
Ethernet 2 link
indicator (green)
Power-on light
(green)
Select light (green)
System error
light (amber)
Advanced systems
management RS-485
Serial port
USB 1
USB 2
C2T OUT port
C2T IN port