Newly purchased RT-N16 router burning smell

I purchased an Asus RT-N16 router last week and have been very happy with the features and performance. That said there has been a rather strong burning smell coming from it.

Looking at the admin console (performance tuning tab) the temperature was ~55-56 C but I have since placed a laptop cooling pad underneath it which brought it down to 46C. Regardless the strong burning smell remains and shows no signs of dissipating.

Have any other RT-N16 owners experienced similar? Is this normal?