Hi everyone, I got a 6 R9 270 rig up and running on the Asrock H81 BTC pro board, we were getting ~480KH/S per card. Though we had stability issues and alot of heat on the risers which caused a single 16x to 1x riser to die. We have stopped mining now and are waiting for new USB risers to arrive.

We had a bad riser so we replaced them with USB risers. Does anyone have experience with this board and USB risers? We have two PSUs and I am a little confused on which PSU connects to what in regards to these new risers (should all the connectors be on the first PSU or should they be distributed?) . We are hoping the stability issues were from these risers (we were using powered risers but not plugged in). I can also post some configs for the cards to see if that is an issue.