User Manual

Intel NUC Kit/Mini PC NUC11AT{X} Technical Product Specification
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5.1.1.1.1 Hard Drive Activity LED Header
Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from
or written to a hard drive. Proper LED function requires a SATA hard drive or optical drive
connected to an onboard SATA connector.
5.1.1.1.2 Reset Switch Header
Pins 5 and 7 can be connected to a momentary single pole, single throw (SPST) type switch that is
normally open. When the switch is closed, the board resets and runs the POST.
5.1.1.1.3 Power/Sleep LED Header
Pins 2 and 4 can be connected to a one- or two-color LED. Table 10 and Table 11 show the
possible LED states.
Table 10. States for a One-Color Power LED
LED State
Description
Off
Power off
Blinking
Standby
Steady
Normal operation
Table 11. States for a Dual-Color Power LED
LED State
Description
Off
Power off
Blinking (white)
Standby
Steady (white)
Normal operation
NOTE
The LED behavior shown in Table 10 is default – other patterns may be set via BIOS setup.
5.1.1.1.4 Power Switch Header
Pins 6 and 8 can be connected to a front panel momentary-contact power switch. The switch
must pull the SW_ON# pin to ground for at least 50 ms to signal the power supply to switch on or
off (the time requirement is due to internal debounce circuitry on the board). At least two seconds
must pass before the power supply will recognize another on/off signal.
5.1.1.2 BIOS Security Jumper
CAUTION
Do not move a jumper with the power on. Always turn off the power and unplug the power cord
from the computer before changing a jumper setting. Otherwise, the board could be damaged.