The MCP355 pump is a high reliability, high pressure industrial pump, featuring a 50,000 hour MTBF (equivalent to a 5 year lifetime). Such reliability is afforded by the unique design of this pump, which contains only one moving part: The magnetically driven spherical impeller spins on a single ceramic bearing, thus extending the life of this pump beyond existing standards. The pump is completely plug-and-play, easy to install and connects directly to the computer PSU with a standard 4-pin peripheral connector (aka 4-pin molex). Its compact design, quiet and powerful motor make it ideally suited for heavy duty cooling in environments where space is at a premium. Features & benefits: 50,000 hours MTBF (Mean Time Between Failure) equivalent to a 5 year lifetime. Superior 12 Volts DC convenience: Plugs into the computer power supply. The MCP355 can be used with full confidence in any MP servers and high-end workstations. High pressure capability of the MCP355 is particularly well adapted to high-flow systems using 3/8" ID tubing & this pump uses 3/8" barb fittings for convenience. No maintenance when used with de-mineralized water and anti-fungal additives (Swiftech HydrX is recommended). Quick installations with adhesive neoprene pad, or permanent installations with thru-bolts. Compatibility & retention mechanisms: The MCP355 can either be installed with the included neoprene pad featuring a peel-off adhesive back, or permanently with thru-bolts also included in the package. Package contents: MCP355 pump, adhesive backed neoprene pad for quick installations, nuts and bolts for permanent mounts & installation guide.