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Silver metal box with a 120 mm fan and black cables

Silverstone

Silverstone SST-ET550-B 550 W power supply

SKU CH-NKHZ-9AMJP MPN SST-ET550-B

ATX12V v2.4 unit delivers 550 W with 80 PLUS Bronze efficiency and a quiet 120 mm fan

  • TypeATX12V v2.4
  • Maximum Power550 W
  • Fans1 x Single 120mm Silent Fan
  • PFCActive PFC(PF > 0.9 at full load)
  • Main Connector20+4Pin
  • +12V RailsSingle
  • Reliable power delivery from 550 W continuous output
  • Efficient operation with 80 PLUS Bronze certification at 82 to 85 percent
  • Quiet cooling via 120 mm fan rated at 18 dBA
  • Stable voltage from Active PFC with power factor above .9
  • Broad compatibility through 100 to 254 Vrms input range

Essential Series 550 W ATX power supply

The Silverstone SST-ET550-B is an ATX12V v2.4 unit rated for 550 W continuous output. It uses a single +12 V rail capable of 42 A and holds 80 PLUS Bronze certification for 82 to 85 percent efficiency across 20 to 100 percent loading. A 120 mm fan runs at 18 dBA for quiet operation.

ATX12V v2.4 limits and protections

The design follows the ATX12V v2.4 standard with active PFC above .9 at full load and accepts 100 to 254 Vrms at 47 to 63 Hz. Over-voltage, over-power and short-circuit protections are built in. The single +12 V rail simplifies load balancing for modern components.

Check connectors and clearances before ordering

Verify your motherboard needs a 20+4 pin main connector and an 8/4 pin EPS connector. Two 6+2 pin PCIe plugs serve most mid-range graphics cards. Six SATA, three peripheral and one floppy connector cover drives and accessories. Ensure the case fits a standard ATX depth unit.

Points forts

  • Reliable power delivery from 550 W continuous output
  • Efficient operation with 80 PLUS Bronze certification at 82 to 85 percent
  • Quiet cooling via 120 mm fan rated at 18 dBA
  • Stable voltage from Active PFC with power factor above .9
  • Broad compatibility through 100 to 254 Vrms input range

Caractéristiques

BrandSilverStone
SeriesEssential Series
ModelSST-ET550-B
TypeATX12V v2.4
Maximum Power550 W
Fans1 x Single 120mm Silent Fan
PFCActive PFC(PF > 0.9 at full load)
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector2 x 6+2-Pin
SATA Power Connector6
Efficiency82% - 85% @ 20% - 100% loading
Energy-Efficient80 PLUS BRONZE Certified
Over Voltage ProtectionYes
Input Voltage100 - 254 Vrms
Input Frequency Range47 - 63 Hz
Output+3.3V@18A, +5V@16A, +12V1@42A, [email protected] , [email protected]
MTBF100,000 hours
Connectors1 x 24 / 20-Pin motherboard
1 x 8 / 4-Pin EPS / ATX 12V
2 x 8 / 6-Pin PCIE
6 x SATA
3 x 4-Pin Peripheral
1 x 4-Pin Floppy
FeaturesHigh efficiency with 80 PLUS Bronze certification
24/7 continuous power output with 40 Degree C operating temperature
Class-leading single +12V rail
Silent running 120mm fan with 18 dBA
PCI-E 8pin and PCI-E 6pin connectors support
All-black flat cables design
Over Power Protection, Over Voltage Protection, Short Circuit Protection
Dimensions3.39" x 5.91" x 5.51"
Weight3.28 lbs.
Poids d’expédition2.27 kg
Dimensions du colis305 × 229 × 102 mm

Questions sur cet article

Will the single 12 V rail deliver enough current for a modern graphics card?

The single +12 V rail is rated at 42 A, providing ample power for GPU and CPU combined.

Does the unit include the PCIe cables my graphics card needs?

Two 6+2-pin PCIe connectors are supplied, covering both 6-pin and 8-pin graphics card sockets.

Is the power supply compatible with a standard ATX motherboard and SATA drives?

Yes, it has a 20+4-pin main connector, an 8/4-pin EPS connector and six SATA power plugs.

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