Thanks guys!
Yesterday i received my new ASRock Q270 PRO mobo and i'm planning to install it.
If i change the mobo only and i connect all the devices, the cpu, the hard drive the 2 psus and the gpus with the risers, will the system boot and work without any issues?
Obviously the gpus order within Hive, will change completely and i will have to change the overclocking configuration, but other than that, do you think won't be other issues?
However the cable that disconnected my 6800 XT, was the riser 6-pin power connector, not the usb-like riser data cable.