i am trying to look it up for you but there are a few gateways with that number and gateway is pretty horrible at telling you exactly what motherboard is in there products. they dont make them they just buy what they can find on the open market.
the only thing that i can see on the card is it requires a specific slot
PCI-E 3.0 16x
and a 400 watt power supply
is it possible to put both cards in at once ? I might try that just to see what happened. you might be able to get it going well enough to see what is in the bios
i have opted out maybe somebody else can help you further.
if you want a refund you can email***@******.***