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Silverstone
Silverstone SST-ET550-B 550 W power supply
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.
Highlights
- 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
Specifications
| Brand | SilverStone |
|---|---|
| Series | Essential Series |
| Model | SST-ET550-B |
| Type | ATX12V v2.4 |
| Maximum Power | 550 W |
| Fans | 1 x Single 120mm Silent Fan |
| PFC | Active PFC(PF > 0.9 at full load) |
| Main Connector | 20+4Pin |
| +12V Rails | Single |
| PCI-Express Connector | 2 x 6+2-Pin |
| SATA Power Connector | 6 |
| Efficiency | 82% - 85% @ 20% - 100% loading |
| Energy-Efficient | 80 PLUS BRONZE Certified |
| Over Voltage Protection | Yes |
| Input Voltage | 100 - 254 Vrms |
| Input Frequency Range | 47 - 63 Hz |
| Output | +3.3V@18A, +5V@16A, +12V1@42A, [email protected] , [email protected] |
| MTBF | 100,000 hours |
| Connectors | 1 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 |
| Features | High 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 |
| Dimensions | 3.39" x 5.91" x 5.51" |
| Weight | 3.28 lbs. |
| Shipping weight | 2.27 kg |
| Package size | 305 × 229 × 102 mm |
Questions about this item
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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