The PowerCase 850W power supply unit supports PC, IPC, Workstation and Server builds and complies with the newest SSI EPS12V Version 2.91 and Intel ATX 12V Version 2.3. It supports the latest operating systems with high-end graphic cards. Dual and quad +12V rails could automatically adjust the output according to the demand from the CPU and graphic's card. It also includes (6+2) pin PCIe connectors for high-end graphic cards and (4+4) pin connectors for Dual Core CPUs and Multi . In addition, we've included a variety of industrial-grade protective circuitry: OCP (Over Current Protection), OPP (Over Power Protection), OVP (Overvoltage Protection), SCP (Short Circuit Protection).