High density glass fabric pcb what yoursquove never understood about your computer is that it is scared to death of water h2o humidity or whatever yoursquod like to name it and even though you do not see the water actually there may be lots of excessive moist in the air killing your motherboard silently and slowly no your motherboard doesnrsquot melt when in contact with water like the wicked witch of the west but it dies of short circuit luckily asrock has a new high density glass fabric