Coolmax 500-Watt SATA-Ready Power Supply with 120mm Cooling Fan Coolmax has earned a reputation for building solid high-performance power supplies and this 120mm Silent Cooling Fan Switching Power Supply is certainly no exception. Built with quality components especially designed to offer extra long life and provide maximum system performance this Coolmax power supply features over voltage over power and short circuit protection and is compatible with all leading processors including Pentium 4 AMD Athlon XP and Pentium III. Includes built-in EMI filter for exceptionally low ripple noise. You can rely on Coolmax for the coolest best-built power supplies. Built-in long life 120mm silent cooling fan easy wasp connector design. Serial ATA 150 Ready 20+4 pin support all Intel and AMD series. Cable-tube on main power cables for better cable routing and neatness tube-tide design to tidy the wires. High quality fan guard and connectors are good for conduction. Over voltage protection short circuit protection on all output levels. Form Factor: ATX. Wattage: 500W. Modular Cabling: No. Fan: 120 mm. Input Voltage: 115 - 230. +3.3V: 30 A. +5V: 45 A. +12V 1: 18 A. +12V 2: 16 A. -12V: 1 A. +5VSB: 2.5 A. 20+4-Pin Connector: 1. 4-Pin P4: 1. Motherboard Power Connector: 4-Pin P4. 4-Pin Floppy Connector: 1. 4-Pin Peripheral Connector: 4. Dimensions: 2.3 x 2.2 x 1.3 inches.