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CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - NA - Black

  • Based on 1,838 reviews
Condition: New
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Wednesday, Jun 24
Order within 20 hours and 11 minutes
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Style: Non Modular


Size: 550 Watts


Features

  • 80 PLUS Bronze Certified: Provides up to 88% operational efficiency, generating less heat and lowering your energy costs.
  • Full Continuous Power: CORSAIR CX Series power supplies are guaranteed to deliver their full rated wattage of continuous power.
  • Low-Noise Cooling: A 120mm thermally controlled low-noise cooling fan only spins at high speed when your power supply is under heavy stress, slowing down for quieter operation at lower loads.

Description

CORSAIR CX Series Power Supplies are 80 PLUS Bronze Certified, offering up to 88% operational efficiency for reduced heat and lower energy costs. Their full continuous power delivery guarantees consistent performance, while a 120mm thermally controlled low-noise cooling fan ensures quiet operation. Fitting easily into most modern PC cases with its compact 125mm length, the CX Series features black sleeved cables and a black powder-coated casing to fit your PC's style. Enjoy confidence in your purchase with a three-year warranty and the support of CORSAIR's global technical team, ensuring dependable power for your system.

Model Name: CX550


Brand: Corsair


Compatible Devices: Monitor


Connector Type: ATX


Output Wattage: 550


Form Factor: ATX


Wattage: 550 watts


Cooling Method: Air


Item dimensions L x W x H: 4.92 x 5.91 x 3.39 inches


Item Weight: 4.12 Pounds


Compatible Devices: Monitor


Connector Type Used on Cable: ATX


Output Wattage: 550


Form Factor: ATX


Wattage: 550 watts


Cooling Method: Air


Power Supply Design: Non-Modular


Number of Fans: 1


Fan Size: 120 Millimeters


Maximum Input Voltage: 240 Volts (AC)


Minimum Input Voltage: 100 Volts (AC)


System Bus Connector Type: 20+4 Pin


Item Dimensions: 4.92 x 5.91 x 3.39 inches


Item Weight: 4.12 Pounds


Model Name: CX550


Brand: Corsair


Manufacturer: Corsair


UPC: 840006670810


Mfr Part Number: CP-9020277-NA


Model Number: CP-9020277-NA


Warranty Description: 3 Years Manufacturer


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • desk top computer power supply for a modern computer
Style: Non Modular Size: 550 Watts
Purchased to match with a new MSI motherboard for a self-build desk top computer. Power supply met my expectations and operates continuously and satisfactorily.
Reviewed in the United States on March 2, 2026 by Tom Luikens

  • Great for pre-built PCs
Style: Non Modular Size: 550 Watts
Works really well. I had a pre-built pc with a really bad PSU. Had to replace it and decided to get this. No problems yet and it’s been around 4 months. It was easy to install and looks like any other PSU. Would recommend
Reviewed in the United States on October 24, 2025 by L.

  • Perfect replacement for my dead PSU in an older ATX 2.x system
Style: Non Modular Size: 550 Watts
Perfect replacement for my dead PSU in an older ATX 2.x system. I had to rearrange my SATA drives to make the connectors on the shorter SATA cable fit, but the upside is less excess cable hanging loose in the case. The PATA (Molex) cable combined with connectors from the old PSU was used to power a SATA Blu-ray drive that the SATA cable couldn't have reached even if it had a fourth connector, plus a front panel power light and fan and a side case fan. So in my case (pun intended) it had exactly the right number of connectors with none left over except the PCIe, which I didn't use, so it's much less cluttered than before. ... show more
Reviewed in the United States on April 10, 2026 by E. Leckert

  • Great Power Supply
Style: Non Modular Size: 550 Watts
Great power supply and easy to install. Replaced the failed power supply on my computer that was only 3years old.
Reviewed in the United States on September 30, 2025 by Glenn Messerschmitt

  • Only 3 SATA cable
Style: Non Modular Size: 550 Watts
Bien, voltajes estables, pero, solo tiene 3 conectores SATA, muy poco.
Reviewed in the United States on December 31, 2025 by Josué Maldonado

  • Buena compra
Style: Non Modular Size: 550 Watts
Sin problemas, funciona óptimamente, bien empacado y precio competitivo
Reviewed in the United States on March 13, 2026 by Julian Romero

  • Makes power. Doesn't complain.
Style: Non Modular Size: 550 Watts
Slapped this puppy in my unraid server and it hasn't let me down yet.
Reviewed in the United States on August 25, 2025 by Joshua

  • Buena calidad
Style: Non Modular Size: 550 Watts
Llego en buenas condiciones, con las especificaciones en regla lo coloque en mi pc por el renombre de corsair pero no espere que fuera tan silencioso.
Reviewed in the United States on January 28, 2026 by David styven espitia valero

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