Akasa b autoc auto thermal fans 7cm12cm akasa ak 174bkt b this b auto thermal fan 12cm from akasa is a quality cooling fan equipped with an integrated thermal sensor controlling the speed while avoiding unnecessary noise pollution the ak 174bkt b can also automatically adjust speed to the ambient temperature keeping power consumption to a minimum the full package includes case cooling fans 3 to 4 pin adaptor 4 pieces of mounting screws and instructions akasa ak 174bkt b auto ther