Enermax XPS 2 ( 460W ) PSU  EG651AX-VH

Features:

• High output
  • 550W output provides sufficient power for server system.
• Quad +12V Rails
  • Independent 12V rails supply to MB/CPU and drives in order to provide stable and clean current to noise-sensitive devices, such as: CPU, add-on cards.Meet UL 240VA safety requirements. It also separate the motherboard rails and video card rails to ensure maximum power to your PCI Express video card.
• High efficiency
  • High efficiency is achieve by using using high quality components and the skills of our designer to maximizes your power supply output and minimize wasted power. Efficiency is the measure of how much of the 100% power going in to the PSU is being used up and the unused power dissipate into heat through the heatsink. Lower efficiency means that more power is being wasted and also the PSU will generate more heat. 
• Dual fans
  • Dual fan design,with high quality and long MTBF Sanyo Denki coolers, offers the best heat ventilation effect.
• Compatibility
  Effectively prevents electro-magnetic pulse leaking from switching power supply to appliances that are being attached to the same power source, i.e. AC wall plug.
• Protection
  • Enermax has one of the highest protection standard on the market today, due to our advance design we offer the following type of protections
  • OCP -Over Current Protection, UCP -Under Current Protection, OVP - Over Voltage Protection, OLP -Over Load Protection, OTP - Over Temperature Protection, SCP - Short Circuits Protection.
    
    
    
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Specifications:

• Type: ATX
• Maximum Power: 550W
• Active PFC: Yes
• Power Good Signal: 100-500ms
• Hold-up Time: 18ms min. at 100~230V AC full load
• Efficiency: 75% min.
• Over Voltage Protection: +3.3V: 3.9V~4.5V; +5V: 5.7V~6.5V; +12V: 13.3V~14.5V
• Overload Protection: +3.3V: 55A max, +5V: 48A max, +12V1.2.3.4: 20A max
• Input Voltage: 90V~264V AC
• Input Frequency Range: 47Hz-63Hz 
• Input Current: 10A
• Output: +3.3V@1.5/36A, +5V@5/36A, +12V@60A, -12V@0.8A, +5VSB@2.7A
• MTBF: 100K hours at 25ºC
• Approvals: UL cUL VDE DEMKO NEMKO SEMKO FIMKO