Biostar TPOWER I55 Setup Manual page 19

On-Board Buttons
There are 2 on-board buttons.
PWRSW1:
This is an on-board Power Switch button.
RSTSW1:
This is an on-board Reset button.
On-Board LED Indicators
There are 12 LED indicators on the motherboard showing 8+4 Phase CPU
Power.
PH1 ~ PH4: CPU VTT (uncore) Power Status Indicators
PH_LED1 ~ PH_LED8: CPU Power Phase Status Indicators
Please refer to the tables below for different messages:
LED
ON
OFF
RSTSW1
PWRSW1
PH_LED1
PH_LED3
PH_LED4
PH_LED5
PH_LED6
PH_LED7
PH_LED8
Phase Indicator
Phase Active
Phase Disable
TPower I55
PH1 PH3
PH2 PH4
PH_LED2
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