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Black rectangular ATX power supply with 120mm fan and sleeved cables

Corsair

Corsair CP-9020171-NA VS550 550W power supply

SKU CH-ESE9-DEZ49 MPN CP-9020171-NA

Delivers 550 W through a single +12 V rail with Active PFC and 80 PLUS White efficiency, using a thermally controlled 120 mm fan in a 125 mm deep ATX housing

  • Max wattage550 W
  • Fan configuration1 × 120 mm Thermally Controlled Sleeve Bearing Fan
  • Fan LEDProduct power interface plug is Asian Version, need to purch
  • Power factor correctionActive
  • Main power connector24Pin
  • 12V railsSingle
  • 550 W output powers mid-range builds reliably
  • 80 PLUS White certification reduces waste heat and running costs
  • Thermally controlled 120 mm fan keeps noise low under typical loads
  • Single +12 V rail at 44 A simplifies GPU power delivery
  • Compact 125 mm depth fits most standard cases

Corsair VS550 550W power supply

The Corsair VS550 is a 550W ATX power supply built to the ATX12V v2.31 and EPS 2.92 standards. It carries 80 PLUS White certification and uses a single +12V rail rated at 44A. A thermally controlled 120mm sleeve-bearing fan manages airflow. The unit measures 125mm in length and includes over-voltage protection.

Entry-level desktop builds and office upgrades

This unit suits standard desktop PCs and basic workstations that need reliable 550W delivery with 80 PLUS White efficiency. It provides two 6+2-pin PCIe connectors for mid-range graphics cards and six SATA connectors for drives. Systems requiring higher efficiency ratings, fully modular cabling or greater +12V current should consider other models.

ATX case integration with fixed cabling

The 125mm depth fits most ATX cases and leaves room for cable routing behind the motherboard tray. Fixed cables include a 24-pin ATX connector, an EPS12V/ATX12V connector, two PCIe connectors, six SATA connectors and a combined SATA-PATA-FDD lead. Active PFC accepts 100-240V input at 47-63Hz without manual switching.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $43.99
Cheaper than about 92% of the 10,869 comparable items (median $142.99).
Max wattage 550 W
Lower than about 82% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameCORSAIR
Product lineVS Series VS550
Model nameCP-9020171-NA
Product typeATX12 V v2.31 / EPS 2.92
Ports & slots
PCIe power connectors2 × 6+2-Pin
SATA power connectors6
Output type+3.3 V@24A, +5 V@20A, +12 V@44A, +5VSB@3A
Connection types1 × 24-pin ATX
1 x EPS12 V/ATX12 V
2 x PCIe
6 x SATA
2 x SATA-PATA-PATA-FDD
Power
Max wattage550 W
Power factor correctionActive
Main power connector24Pin
12V railsSingle
Efficiency certification80 PLUS White Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated input current10–5 A
Size & build
Product dimensions5.91 in × 4.92 in × 3.39 in
Product weight4.12 lb (1.87 kg)
Shipping weight2.22 kg
Package size251 × 180 × 107 mm
Compatibility
PSU length limit125 mm
In the box
Included itemsVS Series ATX Power Supply
Power cord
Mounting screws
Warranty Document
Environment & compliance
Regulatory approvalsFCC, cTUVus, TUV, CCC, BSMI, CE, CB, TUV-S, EAC, RCM, KC, Reach, WEEE and RoHS
More details
Fan configuration1 × 120 mm Thermally Controlled Sleeve Bearing Fan
Fan LEDProduct power interface plug is Asian Version, need to purchase additional local adapter plug
Mean time between failures100,000 h

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