Gigabyte GA-P55A-UD7 User Manual Page 24

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- 24 -Hardware Installation
1-10 Onboard LEDs and Buttons
ACPI LEDs
The 4 embedded ACPI LEDs indicate the system power status (S0, S1, S3, S4, S5) to prevent potential hard-
ware damage due to improper plug/unplug actions.
ACPI LEDs:
S4_S5_LED
S3_LED
S1_LED
S0_LED
CPU VTT/Memory Phase Indicator LEDs
This motherboard contains 4 phase indicator LEDs controlled by the system BIOS to indicate the phase sta-
tus of the CPU VTT and memory. The green LEDs light up under normal working conditions; the yellow LEDs
will be illuminated during an overvoltage or heavy loading state.
M_P_LED (Memory):
MD1: Normal working conditions (green LED)
MD2: Overvoltage or heavy loading (yellow LED)
V_P_LED (CPU VTT):
GD1: Normal working conditions (green LED)
GD2: Excessive overvoltage or heavy loading (yellow LED)
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