This is a used Power Star ALIM-ATX-480WB & P4 computer power supply. It is a 480W power supply suitable for Pentium 3/4 systems. The input voltage is 110V-5A or 230V-2.5A, and the frequency is 50-60Hz. Output specifications are +3.3V 30A, +5V 28A, +12V 1/14A, +12V 2/15A, -12V 0.3A, and +5VSB 2.0A. No warranty is provided.