A power supply is an electrical device that supplies electric power to an electrical load. ... All power supplies have a power input connection, which receives energy in the form of electric current from a source, and one or more power output connections that deliver current to the load. Features: Switching, wide input voltage range Active power factor correction (PFC) Protected against short-circuits, overload and over-temperature Over-voltage protected output Built-in fan speed control Specifications: Brand Name: MEAN WELL Item Weight: 2.43 pounds Manufacturer Series Number: SP-320 Material: 5V Power supply Model Number: 244735 Number of Items: 1 Part Number: SP-320-5 Specific Uses For Product: Personal HZ: 50/60HZ AC Input: 100-240VAC/5A Voltage: 5 volts Wattage: 320 Watts Package Includes: 1 x 275W 5V 55A Power Supply Mean Well MW SP-320-5 Lotted