The Supermicro PWS-1K01B-1R is a redundant power supply capable of supplying high output power at high efficiency. Enjoy the simplicity of active power factor correction (PFC) and automatically correct AC input for a full range of voltages. This power supply is designed to not only provide you reliable power to your server but also protects it from over voltage, over current and short circuiting via protective circuitry embedded into the unit. This power supply is redundant to safe-guard your system from power failure and allows for hot-swap replacement to eliminate system downtime.