DC Brushless fan is safer and saves energy, High speed, low noise rating. This fan can be used as replacements for many computer case or chassis, power supply and other devices fans that use the same 12V power rating. Features: Brushless DC cooling fan Computer cooling fan to help pushing the hot air out of your computer when mounted on the back Also suitable to be used for ventilation in some water dispencer or machine to draw in fresh air Rated Voltage : DC 12V Rated Current : 0.3A External Material : Plastic 7 Blades Size : 8cm X 8cm X 2.5cm RPM : 3500 Mount Hole Diameter : 4mm Hole Distance (Center to Center) : 7.2mm 2 connectors designs : 1 X 4 Pin female connector 1 X 4 pin male connector Color : Black Package Content : 1 X DC 12V Fan 8cmX8cm (Note : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time) We also carry cooling fan at size : 5cm, 6cm, 12cm