EK-Loop DDC 4.2 PWM Motor is a high-performance water pump with power management control (via PWM - pulse width modulation) of rotation speed through motherboard BIOS or a dedicated fan controller. The main difference to a DDC 3.2 PWM is the black cabling, SATA power connector instead of MOLEX, and 32-bit communication. This pump features 3/8" (10mm) non-removable plastic barbs to support any 10mm ID tubing and is compatible with any EK-Quantum Kinetic TBE DDC, and FLT DDC pump-res combo units. EK highly advises using a Convection heatsink to even further prolong the lifespan of this pump. Despite a remarkably small footprint of 2.4" square, EK-Loop DDC 4.2 PWM features an astounding 5,2m of head to provide superior flow rates in today's most complex liquid-cooled systems. This pump is also a high-reliability, high-pressure industrial pump, featuring a 50,000 hour MTBF (5 year lifetime). Its compact design, quiet and powerful motor make it ideally suited for heavy-duty cooling in environments where space is at a premium.