Swiftech MCP355 12v Water Pump (Native 3/8") (120 GPH) Small Footprint: 2.4" x 2.4" x 1.5" 50,000 hours MTBF (Mean Time Between Failure) equivalent to 5 years lifetime. The MCP355 can be used with full confidence in any MP servers, and high-end workstations. Superior 12 Volts DC convenience: plugs into the computer power supply Superior real world performance thanks to its high pressure characteristics (20ft of head). The MCP355 is particularly well adapted to the proliferation of daisy-chained liquid cooling devices in a single circuit: Multiple Processors, Chipset, Graphics, and Hard Drives.