Fanless mini PCs do not have any moving parts. It is silent, ideal for use as a normal desktop PC placed on top of your desk or as the hub for video/business conferencing. In digital signage, majority of displays are in areas of heavy human/pedestrian traffic like airports, shopping centres, fast food chains, which generates a lot of dust. Devices with internal fans tend to suck in dust making maintenance difficult and is one of the major cause of equipment failure. We would strongly recommend the use of fanless devices in these environments.