4X PCIe Splitter for GPU Riser Setup, Enable Gen1 in bios Crypto Mining

I wanted to change the motherboard on my 4GPU 3D printed mining rig. I'm installing an ITX motherboard and need to add 4 GPU's. To get these to work like all 1X PCIe risers then you need enable PCIe Gen1 in the bios.
https://www.amazon.com/gp/product/B09G1D4F53/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeAS=B09G1D4F53&linkId=89904f02c2e871b26efab62f0cfe9c15