it is tested and it fully works. It has a light capabilities, meaning that it can run one more extra GPU. 
GTX 1080 8GB Nvidia GeForce EVGA SC Graphics card
GTX 1070 8GB Nvidia GeForce ZOTAC Mini GPU Graphics card
MSi NVIDIA Geforce GTX 1070 8GB GDDR5 Gaming X 8G Graphics Card - NO BOX
MSI NVIDIA GeForce GT 710 Graphics Card - 2GB
Nvidia GeForce RTX 5070 Graphics Card Gainward Phoenix GS
