The FNP/FXP-1500/1800 are power-factor-corrected (PFC) front-ends which (depending on model type) provide a 12 VDC or 48 VDC (1500 or 1800 watt) output, and can be used in hot-swap redundant systems. Their very small dimensions allow configuration of up to three units in a 1U rack. The FNP front-ends have a front-mounted AC receptacle and the FXP front-ends have a rear-mounted AC connector. The highly-efficient thermal design with internal-fan cooling permits their use over wide temperature ranges and provides very-high reliability. Status information is provided with front panel LEDs, logic signals, and via an I2C management interface. In addition, the I2C bus can enable the power supply, set high fan speed, adjust the output voltage, and set the output current limit. The FNP and FXP-1500/1800's meet international safety standards and display the CE-Mark for the European Low Voltage Directive (LVD). Power-shelf solutions provide rectification, system management, and power distribution, while maintaining high reliability and offering flexibility for future expansion. The power shelves can be configured with up to three hot-swappable 1500 or 1800-watt AC-DC front-ends.