specification : thermaltake tmg sl1 slot fan fits in dual expansion slot super silent at 16dba transparent fan with 3 blue leds blue led light gives a glow in the dark take the warm air out of the chassis to elongate the life of system components long life enter bearing dimension: 180(l) x 120(w) x 41.5(h)mm fan dimension: 80 x 25 mm rated voltage: 12 v fan speed: 1650rpm air flow: 10.5 cfm noise level: 16 dba life expectation: 50,000 hours connector: 4-pin weight: 134 g