I recommend you to use this cooler for stable HDMI IN recording. The X9 goes really hot especially when I use an alternative recording app. (higher than 50~60'c) This cooler will be the best cooling solution. Buy this kind of cooler (blower) and attach it on the left side of the X9 using super glue. * Fan rpm should be less than 2000 rpm. 3000 rpm is too loud. * Also, short USB extension cable is recommended to use other USB ports.