H220-X CPU Cooler The kit is shipped factory pre-filled, ready for plug-and-play installation, and it is maintenance free during its warranty period. Both Swiftech's powerful MCP30 pump and high-pressure Helix fans are PWM compliant devices, As a bonus, the system also includes our PWM splitter allowing connection of up to 8 PWM devices which can then be controlled as one by the motherboard. The system can be entirely customized thanks to easily replaceable tubing and fittings. Thanks to its powerful pump it can support additional liquid cooled components such as graphics cards and/or additional radiator(s).