Lenovo ThinkCentre A35 Service Manual page 29

15) CLR_CMOS (Clear CMOS)
You may clear the CMOS data to its default values by this jumper. To clear CMOS, temporarily short pins
1-2. To prevent improper use of this header, we do not include a jumper on it.
16) PWR_LED
PWR_LED is connected with the system power indicator to indicate whether the system is on/off. It will
blink when the system enters suspend mode.
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