The Power LED is located beside the power button.
Power LED Behavior | System State |
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Off (no light) | Off and not powered |
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Green flash very slow | Off but powered |
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Green on | Operating normally |
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Green flashing slow | Suspend |
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Green flashing fast | |
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Red on | Over voltage shutdown |
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Red flashing | Over temperature |
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The UPS Mode LED is located between the brightness control buttons.
UPS LED Behavior | UPS Battery State |
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Green flashing fast | UPS battery powered |
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Green on or flashing slow | UPS battery charging |
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Off (no light) | UPS battery charged |
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There is an LED next to both the COM1 and COM2 serial ports
COM Port LED behavior | COM Port State |
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Off (dark) | No power applied to COM port |
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+5V power is applied to pin 9 of COM1 | Green |
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+12V power is applied to pin 9 of COM2 | Amber |
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