Seasonic S12II-520 Bronze 520W ATX Black power supply unit

LKR 11,000
EMI starts at LKR 183 /month. View Plans

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36 Months Warranty

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  • AC input voltage: 100 - 240
  • Fan diameter: 12 cm
  • Motherboard power connector: 20+4 pin ATX
  • Noise level: 22 dB
  • Width: 150 mm
  • Illumination: No
  • RoHS compliance: Yes
  • Storage temperature (T-T): 0 - 50 °C


  • AC input voltage
    100 - 240
  • Power Factor Correction (PFC) type
  • Combined power (+3.3V)
    130 W
  • Combined power (+12V)
    480 W
  • Combined power (+5V)
    130 W
  • Combined power (-12V)
    9.6 W
  • Combined power (+5Vsb)
    12.5 W
  • Max output current (+3.3V)
    24 A
  • Max output current (+12V)
    40 A
  • Max output current (+5V)
    24 A
  • Max output current (-12V)
    0.8 A
  • Max output current (+5Vsb)
    2.5 A
  • Power protection features
    Over power, Over voltage, Short circuit
  • AC input frequency
    50 - 60
  • Fan diameter
    12 cm
  • Number of fans
    1 fan(s)
  • Cooling type
  • Motherboard power connector
    20+4 pin ATX
  • Number of SATA power connectors
  • Peripheral (Molex) power connectors (4-pin)
  • EPS power connector (8-pin)
  • PCI Express power connectors (6-pin)
  • PCI Express power connectors (6+2 pin)
  • Floppy drive power connector
  • Monitor outlet
  • Noise level
    22 dB
  • Form factor
  • Purpose
  • On/off switch
  • Width
    150 mm
  • Depth
    140 mm
  • Height
    86 mm
  • Illumination
  • Colour of product
  • RoHS compliance
  • 80 PLUS certification
    80 PLUS Bronze
  • Energy Star certified
  • Certification
    AMD Game, BSMI, CE, FCC, C-tick
  • Storage temperature (T-T)
    0 - 50 °C
  • Operating relative humidity (H-H)
    20 - 80%


Today, Sea Sonic Electronics launches the S12II “Bronze” Series; the updated version of the award winning S12II Series to meet the growing demand for high efficiency and yet price competitive power supplies.

The S12II Bronze Series achieves the 80 PLUS® Bronze standard of at least 82%, 85% & 82% power usage efficiency at 20%, 50% & 100% operating loads respectively. This, combined with Active Power Factor Correction, enables the S12II Bronze to reduce energy waste, boost power efficiency and more importantly, reduce the energy costs for the users.

In addition to the efficiency upgrade, the S12II Bronze Series maintains the strong foundations of the S12II series. Important features such as the stable and proven Double Forward Converter circuit design, the industry leading Smart and Silent Fan Control (S2FC) and the use of high reliability Japanese brand capacitors are all carried forward to the “Bronze”.

The S12II Bronze Series, similar to its predecessors, is available in the standard ATX Form Factor and in wattages that are most common for a PC system. In addition to the all-in-one cabling design, the 520W and 620W models come with additional EPS connectors for IPC and server systems and supports both 6P & 8P PCI-E connectors for the most current and high end dual graphic cards.

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