I have 3x R9 290x and 2x R9 290 on Z97 GAMING 5 motherboard.
4 of them are connected with riser x1 -> x16 from motherboard x1 slot.
I want to connect 5th with riser x1 -> x16 from motherboard x16 slot, but doesn't work.
I checked riser, electricity, test on other slots evertything and and it works.
I tried to unplug one x1 riser and there are only 3 GPU detected.
I'm using windows 7