My board has an issue with Logitech MX510 mouse connected via USB. Not sure if its the case with all USB mouses or just logitech mouses,or simply my board/bios is flakey. If I plug-in the mouse before I plug in the PSU cable in the PSU,the mouse sensor starts to glow immediatly and cannot be recognized in windows. Re-plugging the mouse works. If I go by "first psu,then mouse" connecting method it works without problems. As u can assume,this only happens when pc is turned off and u need to reconnect all the cables so really not a big deal,but it is annoying to experience for the first time