Yes we have another review for a Danger Den product, by now I don't even need to tell you that Danger Den is one of the main water cooling manufacturers in the USA. In this review I'm going to have a good look at a new product from Danger Den, their new fillport. A what? A fillport, it is basically a port connected to a barb sealed of with a hex nut, which you use to fill and bleed your water cooling loop without opening your case.