The Dell Optiplex 7440 155 W Power Supply Unit is a reliable and efficient component for powering your computer system. With a maximum power output of 155 W, this unit is designed to provide consistent and stable electricity to keep your system running smoothly. As a genuine Dell product, you can trust in its quality and compatibility with your computer setup. Whether you are replacing a faulty power supply or upgrading your system, this unit is a dependable choice for ensuring optimal performance.