Appearance size: 97 × 94 × 33mmBearing type: double ballModel; BA1003B12GCurrent 4.50A large air volume fanRated voltage: DC12VOrigin: TaiwanSpeed: supportInterface; four lines (support PWM intelligent function, motherboard automatic speed control)51.9CFM Air volume wind pressure: 88.4 mmh2oNoise value: up to 65.6dBWiring: (red positive, black negative): these two can be used.Life: 10.0000 hours (25 °, 45 ~ 85% relative humidity environment)