I have searched and only found probs with the m-2. I wired up my 120w opus and with a jumper on the atx plugs the board fires up but does not boot. I change the jumpers to the at option and board fires up right away as before but I have to unplug and plug the power jumper wire several times, after 3rd or 4th time when I unplug it computer boots. I plug the cable back in and it stays running but the computer will not shut down unless I unhook the power cables to the opus. I have 2 fans, an ide cf disk, and a cd rom drive and the via 1.5g board. I should have enough power, any help would be much appreciated. Thanks