Enlight - Enlight EN-8304946 300W ATX PC Power Supply HPC-300-101 - HPC300-101 for Intel P3/P4 Core i3/i5/i7 & AMD Dual-Core Desktop Computer Enlight EN-8304946 Model: HPC-300-101 300 Watts output. UL-Certified FCC Approved High Quality PSU Intel Pentium 4 Ready. Automatic Fan Speed Control (A.F.C.): with built-in temperature sensor. The power supply fan speed is regulated in reference to its internal temperature sensor. The low friction fan turns slowly at low temperatures, reducing power consumption and greatly reducing fan noise. Conversely, the fan is allowed to spin up its speed in response to temperature increase. The fan speed ranges roughly from 1200 RPM to a full speed of 3000 RPM. Built-in QUAD Protection: Built-in Quad Protection: Over Voltage Protection Over Power Protection Over Heat Protection Short Circuit Protection