I recently got a refurbished NUC5i7RHY. I got a new Crucial MX500 M.2 and two 4GB sticks of Crucial RAM. The unit powers on and I was able to install Windows 10 1903 and everything appears to work perfectly. My only concern is that the hard drive indicator on the lid lights up orange/amber for read/write. The Crucial MX500 has a built in amber read/write LED, but upon further inspection it looks like the NUC's indicator is isolated and has its own LED.
My question is: is it normal for this indicator to be amber? My older NUC's indicator was blue. I'm primarily familiar with Dell, so when I see an amber indicator, it makes me nervous.