The Dell G4V10, K2H58, N038C, NCYVN, and T498G are all part numbers for the same 250W TFX (Thin Form Factor Extended) power supply unit (PSU) model, which is also known as the TFX0220D5WA.
This power supply unit is designed for use in Dell desktop computers that require a TFX form factor PSU, and it features a compact size that makes it perfect for small form factor (SFF) cases.
The TFX0220D5WA PSU delivers a continuous power of 250W, which is sufficient to power the CPU, motherboard, hard drives, and other peripherals in the computer. It 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 power supply unit 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.