The front panel light is controlled in the BIOS. Of the S0 state is on the light is solid (blue). S3 standby is primary color .25 seconds on, .25 seconds off indefinitely. Intel ready mode is Solid Secondary color. all these settings are changeable in the BIOS.
Anyway, that would be my suggestion of where to look first.
I checked the BIOS, S0 was set for solid primary. The CIR lights blue but the power switch itself does not illuminate.
hangtown, the front panel blue light (slow orange blink when the unit is suspended) that you call CIR is in fact the power indicator.
it has moved from the power button being illuminated on the NUC5 to the front panel LED on the NUC6, where the button is not illuminated anymore.
The CIR receiver is sitting next to the blue led on the front panel but it is not visible from the outside.
Thank you hegenious. That is what I thought in the first place, but it the "documentation" that came with the NUC doesn't specify that is the power indicator, just the CIR. It would have been nice for Intel to update the "documentation" that ships with the NUC or at least have it on their website.
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I hope this can help you.