TOP.pho
Top Copper Layer, Positive Polarity

MT.pho
Top Soldermask

ST.pho 
Top Silkscreen

L2.pho 
Second Inner Copper Layer for Ground Plane, Positive Polarity

L3.pho 
Third Inner Copper Layer for Power Planes, Positive Polarity

BOT.pho
Bottom Copper Layer, Positive Polarity

MB.pho
Bottom Soldermask

SB.pho 
Bottom Silkscreen

NC.drl 
NC Drill File

FAB.pho
Drawing 

