User guide

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3: System Operation and Monitoring
Notes:
• Blink rate is ~1 Hz at 50% duty cycle.
• It is also off when the system is powered off (S5) or in a sleep state (S1).
• The power LED sleep indication is maintained on standby by the chipset. If the system is
powered down without going through the BIOS, the LED state in effect at the time of power
off is restored when the system is powered on until the BIOS clear it.
• If the system is not powered down normally, it is possible the Power LED will blink at the
same time the system status LED is off due to a failure or configuration change that prevents
the BIOS from running.
Hard Disk Drive (HDD) LEDs
Figure 3-4 shows the location of the LEDs for both the 2.5” and 3.5” HDD carriers.
Figure 3-4 HDD Carrier LEDs
H
Hard Drive
Activity LED
Amber
On Hard drives are available.
Blink Hard drive activity detected.
Off No hard drives are available.
Table 3-1 Control Panel Components and Functions (continued)
Label Button/LED Color Condition Function