?Wide Applications & Compact Size? Less than 4inches, take up small space. it works great for DIY fan or as an additional cooling fan for your gaming needs X-box, ps4, Amplifier, Reptile Terrarium, Amps, Vivarium, RV Refrigerator, Greenhouse, mushroom growing, sound system, etc. ?Variable Speed with AC Plug?The variable speed fan is great for cooling electronic components. This is especially true when components are used in a cabinet with limited air flow to help cooling. By having variable speed, you can adjust the speed for proper cooling with the least fan noise from the circulating air. And you can Plug in a wall outlet to use. ?Adjustable Wind? We have taken into account your various needs, the fan can rotate speed from 1400rpm to 4500rpm, providing the most suitable wind to quickly cool your devices down. ?Dual Ball Bearing?Long life with 50,000Hours.and allows the fans to be laid flat or stand upright. ?What's in the box?1 x 80mm Fan, 1 x Speed Controller, 2 x Fan Grill, 4x Install Screws, 4x Rubber feet