Scythe ULTRA KAZE series DFS123812L-2000 120x120 x 38 mm Case Fan Silent to Power User Ready Silent user can obtain more airflow without sacrificing in noise level (1000rpm ~ 2000rpm) Power user can get extra airflow from the static pressure feature (2000rpm ~ 3000rpm) 4-Pin Peripheral Adopter Provided To be versatile, this case fan comes with the 4-pin peripheral adopter.