Startech 120x25mm dual ball bearing computer case fan w lp4 connector this versatile 12cm pc case fan is designed to fit a broad range of computer case designs to circulate cool air into the case or exhaust warm air out preventing problems due to overheating components a quiet cooling solution the 12cm dual ball bearing case fan features a high efficiency blade design thats capable of moving 7294 cfm throughout the computer case helping to optimize system performance this broad