I have a 1x PCI-E sound card and I want to put in in the lowest (SLOT 1), 16x slot, which is for the 3rd graphics card (4x). When I had Asus board I used it for the sound card in 1x mode without any problems at all, I had such option in BIOS. Now after the upgrade it wouldn't boot giving me the graphics card error... I can't put the sound card anywhere else as I have a massive CPU cooler on top and the graphics card blocks the 1x slots.... Who designed it to leave PCI and Block PCI-E 1x by the graphics card...