Aurender N100C

This unit is about two years old.  Works flawlessly.  It differs from the N100H in that it has a 4TB rather than 2TB internal drive and also has a digital coax SPDIF output in addition to the USB.  I prefer the sound of the SPDIF with most DACS.  I'm rating it a 9.  There is a tiny spot on top that feels like a raised grain of sand or something.  I showed a pic of it that makes it look massive.  It is literally about the size of a grain of sand.  Please be aware that Aurender servers require an ethernet connection for control and streaming.  The Conductor App for control then works on an iPad via wi-fi.  Flat shipping price is for Fedex insured, signature required. 
I just changed the condition to 8 from 9 due to finding a very small very faint spot on the lower front corner.  It is very subtle and I'm not sure that it isn't something in the finish from manufacture.  However it is there so I'm changing the rating.  Thanks.