How did you manage to go through 9?
Running 4 together at one point for work before moving to my eventual 3, at same time brother gave a 5th when he moved to 980Ti's. Was also curious if I could get 5 way working on my board being E-WS with the PLX chips. 6 & 7 were RMA'd. Number 8 I accidentally wrecked when I stripped two of the screw heads so sold it off for a loss way back. Number 9 was for a system I built for a guy who could not pay immediately so I hung on to it and tested it of course.