fantome wrote:The Asrock X399 Taichi allow only 3 GPU because the case panel plug make contact with the last GPU card. you will need to do some tweaking to modify that. I have try to find a 90 degre adaptator on the net, but don' t find any.
if you are good with electronics it must be easy to create your own.
I have few of these bought for my DualXoen motherboards, Almost all MBs have that problem if you want to plug in PCI-E slot on bottom.
This is solution: