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    Supermicro 520W 1U Multi-Output Power Supply (PWS-521-1H20)

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    Supermicro 520W 1U Multi-Output Power Supply (PWS-521-1H20)


    • Designed for Supermicro 1U Server
    • 20 Pin ATX Output
    • Active PFC for High Efficiency
    • Replaced by: PWS-601-1H
    This item is end-of-life (EOL). Here is the replacement for this product.


    • System
    • Chassis
    SKU #:
    Check if your server system is validated with this product
    •System: Enter a server part number (e.g. SYS-1027B-MTF)
    SKU #:
    Check if your chassis is validated with this product
    •Chassis: Enter a chassis part number (e.g. CSE-743TQ-865B)


    The Supermicro PWS-521-1H20 is capable of 520W output power at high efficiency. Enjoy the simplicity of active power factor correction (PFC) and automatically correct AC input for a full range of voltages and a quiet fan to keep it cool under heavy loads. This power supply is designed to not only provide you reliable power to your Supermicro 1U server but also protects it from over voltage, over current and short circuiting via protective circuitry embedded into the unit. All materials contained comply with RoHS requirements and is certified by Supermicro.

    Cables Included:
    • 1x 20 Pin ATX (Motherboard)
    • 1x 8 Pin 12V (CPU)
    • 1x 4 Pin 12V (CPU)
    • 3x 4 Pin Legacy HDD
    Detailed Specification

    Additional Information

    Total Power Output 520W
    Type Single
    Type of Power Supply Power Supply
    Form Factor 1U
    Dimension (W x H x L) 100 x 40.5 x 245 mm
    +5V 20A
    +12V 39A
    +3.3V 16A
    5V Standby 3A
    +12V Standby N/A
    Input Voltage Range 100-240V
    Input Frequency Range 50-60Hz
    Input Current Range 7-3A
    Output Type 20Pin ATX Cable Output
    8Pin / 4Pin (12V) Connector Both
    PFC Yes
    PMBus No
    Energy Efficiency N/A
    80 Plus Certification N/A
    Warranty 1 year warranty
    Product Environmental Compliance RoHS and REACH compliant, details available upon request
    Prop 65 Warning
    This product can expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to