Product Detail 4 Channel Fan Controller 3.5" Bay Mountable Wide Range Voltage Adjustment VFD Panel Error Detecting Alarm Feature 4.02 x 0.99 x 3.66 (in) 102 x 25 x 93 (mm) Display dimension: 1.96 x 0.55 (in) / 50 x 14mm . The "Scythe Kaze Master Pro KM03-BK-3.5 - Fan speed controller with alarm - black" is best product for you. We recommended Scythe Kaze Master Pro KM03-BK-3.5 - Fan speed controller with alarm - black