Him guys. I'm creating my first rig, and I have a problem with connecting 6th GPU. 5 cards works fine, but 6th card don't want to.

My setup:
MB: Asrock H97 Anniversary
PSU: EVGA SuperNOVA 1300 G2, 80+ GOLD
OS: Win10
GPU: Gigabyte G1 Gaming GTX 1070 x 6
NVidia Software: 368.81

Can s/o tell me what I can do to see 6th card?

Thnx in advance.