I've recently got a TP-Link wn751nd in the mail. When I went to install it I saw that the gpu fan (gtx 560ti) was positioned downwards. I'm afraid that this may cause cooling issues and further problems. My gpu idles at 54 degrees C right now and before it idled at around 30-40. I don't think Amazon gives refunds on opened and used products. I only have one fan too because my mother board only had one space for the chasis fan which I had to the rear fan. Not much ventilation as there is no room for it.