@nerd nation
judging by the molex on the fan...it seems like ur running ur fan off a PSU... which would make it run at 12v (usually)

but if u connect the fan to the USB port itll be running on only 5v.. have u tried running the fan at 5v? if not.. y not give it a try...kinda curious on how much improvement ull get with 5V

also curious to know the difference in temps between the fan blowing in cool air (which is the current position) and sucking out hot air (the fan reversed). curious to know these 2 setups with 12v and 5v

the fans will only be receiving 5v as thats the USBs power. and will run slower than it would at 12v

yes u can wire 2 12v fans and use the same USB port....BUT depends on the amperage of the fans...the USB ports dont really have much amperage.