Dell POWEREDGE SC440 Hardware Owner's Manual page 12

Table 1-2. Front-Panel Components (continued)
Item Component
5 USB connectors (2)
6 power button
7 power light
8 network link light
9 diagnostic lights (4)
12
About Your System
Icon Description
Connects USB 2.0-compliant devices to the system.
The power button controls the DC power supply output to the system.
NOTE:
If you turn off the system using the power button and the system is
running an ACPI-compliant operating system, the system performs a
graceful shutdown before the power is turned off. If the system is not
running an ACPI-compliant operating system, the power is turned off
immediately after the power button is pressed.
No light — The system is off.
Steady green — The system is powered on.
Blinking green — The system is in a low power state.
Steady amber — The power supply is probably good.
Blinking amber — The system is powering up.
• If the hard drive indicator is off, the power supply may need to be
replaced.
• If the hard drive indicator is on, the system board is faulty. Check the
diagnostic indicators to see if the specific problem is identified. See
"Diagnostic Lights" on page 15.
Lights when the system is linked to a network.
Display light-pattern codes to assist in troubleshooting system
problems. See "Diagnostic Lights" on page 15.