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Black rectangular ATX power supply unit with modular cable sockets and a single 135mm fan grille

ASUS

ASUS ROG-STRIX-550G 550 W power supply

SKU CH-WHW5-YRFW6 MPN ROG-STRIX-550G

A full-modular ATX12V unit delivers 550 W through a single +12 V rail, 80 Plus Gold efficiency and a 135 mm dual-ball fan in a 160 mm chassis

  • TypeATX12V
  • Maximum Power550 W
  • Fans1 x 135mm Dual Ball Fan
  • Main Connector20+4Pin
  • +12V RailsSingle
  • PCI-Express Connector2 x 6+2-Pin

Options ATX 80+ Gold (550W)

Edition Black

  • 550 W maximum power handles demanding builds
  • 80 PLUS Gold certification reduces energy waste
  • Full modular design keeps cables tidy
  • 135 mm dual ball fan bearings last longer
  • 160 mm compact length fits smaller cases

Power supply for compact builds

The ASUS ROG-STRIX-550G is a 550 W ATX12V unit built for systems that need reliable power in a short chassis. Its 160 mm length fits many small-form-factor cases while still delivering a single +12 V rail rated at 45 A. The 80 PLUS Gold rating confirms high efficiency across typical loads.

Full modular cabling eases installation

All cables detach from the unit so you connect only the 24-pin, two 4+4-pin CPU, two 6+2-pin PCIe, eight SATA and three peripheral leads you actually need. The 135 mm dual ball-bearing fan uses Axial-tech blades and a 0 dB mode that stops the fan at low load. A common oversight is forgetting to seat the 24-pin and both CPU connectors fully before first boot.

Single +12 V rail at 45 A decides compatibility

The entire 550 W capacity is available on one +12 V rail, so the 45 A limit is the figure that determines whether the PSU can handle your graphics card and CPU combination. Check your components' combined 12 V draw against this rating before purchasing.

Points forts

  • 550 W maximum power handles demanding builds
  • 80 PLUS Gold certification reduces energy waste
  • Full modular design keeps cables tidy
  • 135 mm dual ball fan bearings last longer
  • 160 mm compact length fits smaller cases

Caractéristiques

BrandASUS
SeriesROG Strix
ModelROG-STRIX-550G
TypeATX12V
Maximum Power550 W
Fans1 x 135mm Dual Ball Fan
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector2 x 6+2-Pin
SATA Power Connector8
Max PSU Length160 mm
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
Over Voltage ProtectionYes
Input Voltage100 - 240 V
Output+3.3V@20A, +5V@20A, +12V@45A, [email protected] , +5VSB@3A
Connectors1 x MB 24/20-pin
2 x CPU 4+4-pin
2 x PCI-E 6+2-pin
8 x SATA
3 x Peripheral
PFCActive
SLINo
CrossFireNo
FeaturesROG heatsinks cover critical components, delivering lower temperatures and reduced noise.
Axial-tech fan design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure.
Dual ball fan bearings can last up to twice as long as sleeve bearing designs.
0dB Technology lets you enjoy light gaming in relative silence.
An 80 Plus Gold Certification is the result of Japanese capacitors and other premium components.
Cosmetic customization is enabled by a magnetic logo and stickers that help you reskin the visible side to your liking.
Ful
Dimensions3.39" x 5.91" x 6.30"
Weight3.81 lbs.
Package ContentPower Cord x 1
Motherboard Power cable x 1 (610mm)
CPU Cable x 2 (1000mm)
PCI-E Cable x 2 (675mm)
SATA Cable x 2 (810mm/860mm)
Peripheral x 1 (450mm)
Join the ROG badge x 2
ROG logo magnet x 1
ROG label x 3
ROG Cable Tie x4
Cable Tie x8
Screws Package x1
*MB/ CPU/ PCI-E cables come with embedded capacitors in the middle.
Poids d’expédition3.08 kg
Dimensions du colis305 × 188 × 119 mm

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Questions sur cet article

How can I confirm the 135mm dual ball fan is running correctly after installation?

The 0dB Technology keeps the fan off at low loads; it spins up when the +12V rail draws more power, so you will hear it only under heavier demand.

Which cables are included and what must I source separately for a typical build?

The box supplies a 24/20-pin motherboard cable, two CPU 4+4-pin cables, two PCI-E 6+2-pin cables, eight SATA cables and three peripheral cables; no extra cables are required for standard ATX12V systems.

Should I choose the 550 W Gold unit or step up to a higher wattage for a single GPU setup?

With a single +12V rail rated at 45 A and two PCI-E 6+2-pin connectors, the 550 W model covers most mid-range graphics cards; only multi-GPU or extreme overclocking builds would need more headroom.

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