The Dell 9XD51, GYC55, D3YCN, and WYX72 are all part numbers for the same 180W power supply unit (PSU) model, which is also known as the DPS-180AB.
This PSU is designed for use in Dell desktop computers that require a SFF (Small Form Factor) PSU. It delivers a continuous power output of 180W, which is sufficient to power the CPU, motherboard, hard drives, and other peripherals in the computer.
The DPS-180AB PSU features an Active Power Factor Correction (PFC) system that ensures efficient and stable power delivery, and it is also compatible with Energy Star and 80 PLUS certification standards. This makes it an energy-efficient PSU that helps to reduce electricity costs and environmental impact.
The PSU comes equipped with all the necessary cables and connectors to connect to the various components inside the computer, including the motherboard, hard drives, optical drives, and other peripherals. It also features over-voltage, over-current, and short-circuit protection to ensure the safety of the computer and its components.