NEW Energy-Efficient Replacement TFX Power Supply for Dell Vostro Slim 200, 200S, 220S, 400 SFF, Inspiron 530s, 531s, 537s, 540s, 545s, 546s, 560s, 570s, 580s, 545s 620s...

You are buying an aftermarket replacement unit that is more efficient than the original OEM unit. Furthermore, it frees up more room inside the case for better air circulation and it is easy to install because it is slightly smaller in size. All screw holes will line up nicely with the PC case and the unit will be securely installed. An intelligent fan controller with built-in thermostat allows the fan to spin down whenever internal temperature is lowered. This standard feature extends the life of the already long-life fan further and provides lower noise operation. PFC technology is standard for this unit to provide greater energy transfer efficiency.