HP c8000 Hardware And Software Setup Manual page 33

Disk Activity LED (front panel)
LAN LEDs (front and rear panels)
HP workstation c8000 — Getting Started
The Disk Activity LED on the front panel indicates the state of hard
drive and optical drive activity on the system.
Disk Activity LED
Off
Blinking (green)
NOTE: The Activity LED automatically communicates with hard
drives, optical drives and optical drives connected to the built-in SCSI
controller. To communicate with drives attached to PCI-card
controllers, connect the card to the system board using an LED
activity cable.
The LAN Activity LED on the front panel of the system blinks when
network activity is present.
The two LAN LEDs on the rear panel of the system provide
additional information about LAN activity. These LEDs are part of
the LAN connector.
LAN LED Location
Activity Tower: Right
Rack-mounted:
Top
Gbit Tower: Left
Rack-mounted:
Bottom
State
Off or no current disk/drive activity
Disk/drive is being accessed
Color State
Off No LAN connection
Yellow Link established
Blinking Activity on LAN port
Off 10Mbps
Orange 100Mbps
Green Link at 1000Mbps
Troubleshooting
4–7