Quote Originally Posted by EzyRyder View Post
I believe its a problem with the Marvell controller and not the board itself as other users of other Asrock boards with the same controller have reported the problem. The problem is basically when you plug an eSATA device your computer will become very laggy, the mouse will almost freeze and the computer will become unusable until you turn the eSATA device off.
EzyRyder, do you by any chance use the "M2" SATA port on your board? M2 is shared with the rear-panel eSATA port. wouldn't surprise me if funny things happen when both are connected simultaneously.