@dimka890 Thanks! I will try with a bunch of 1070's I have on the way.
@NotFuzzyWarm sry... wrong board. Maybe a mod can move the thread? Thanks!
Some chinese sellers say that switches does not work with Nvidia GPUs, but if you can test it will be good. Unfortunatly i don't have any nvidia cards.
P.S. I saw at aliexpress switches 1-> 4 PCI-E, there is no mention of nvidia cards, maybe 1-> 4 switch will be work fine