The D5 is the ultimate pump for PC water-cooling. It features exceptional performance and unrivalled reliability. This version of the D5 pump is PWM compatiable and can be connected to the motherboard for speed control. This pump ships without a front cover. You will require a D5 top or D5 reservoir in order to use this pump.- Sata and PWM- PWM Speed Control (800-4700rpm)- Maximum Flow: 1200 lph (12V)- Maximum Head Delivery: 3.7m (12V)- Voltage: 8-24V (37W Max)- Maximum Temperature: 60C- Dimensions: 90 x 57 x 90 mm