￭ All-black flat cables design

SilverStone created the Essential series power supplies to provide enthusiasts with an affordable choice when building PCs. ET650-B and ET550-B have 80 PLUS Bronze efficiency with single +12V rail and the ability to provide 24/7 40℃continuous output. In addition, they are equipped with low-noise 120mm fan and all-black flat cables for easier management. Even high-end systems with powerful graphics cards can be powered easily by Essential series PSUs’ standard 8pin / 6pin PCI-E connectors, making them an outstanding choice for those seeking the most value and performance for their money.

Remark

Designed for 80 PLUS Bronze level of efficiency to reduce wasted heat and save on electricity.

Built-in 120mm fan has excellent airflow and low noise, perfect for quiet home or office use.

Model No.

SST-ET550-B

Max. DC Output

550W

Power density

305W per liter

Load Range

	+3.3V	+5V	+12V1	+5VSB	-12V
Max.(Amps)	18A	16A	42A	2.5A	0.3A
Peak (Amps)	/	/	/	3.0A	/
Min.(Amps)	0.3A	0.5A	1.0A	0A	0A
Range (%)	±5%	±5%	±5%	±5%	±10%
Line Reg.(%)	±1%	±1%	±1%	±1%	±1%
Ripple(mVp-p)	50mA	50mA	120mV	50mV	120mV

Color

Black（Lead-Free Paint）

combined +3.3, +5V

110W

Combined +12V

504W

Input Voltage

100 ~ 254 Vrms

Input Frequency Range

47Hz ~ 63Hz

PFC

Active PFC（PF>0.9 at full load）

Efficiency

82% ~ 85% @ 20% ~ 100% loading

MTBF

100,000 hours

Operating temperature

0°C ~ 40°C

Protection

Over Power Protection
Over Voltage Protection
Short Circuit Protection

Connectors

1 x 24 / 20-Pin motherboard connector（500mm）
1 x 8 / 4-Pin EPS / ATX 12V connector（750mm）
2 x 8 / 6-Pin PCIE connector（500mm / 150mm）
6 x SATA connector（"500mm / 150mm / 150mm" x 2）
3 x 4-Pin Peripheral connector（500mm / 150mm / 150mm）
1 x 4-Pin Floppy connector（500mm / 150mm / 150mm / 150mm）

Cooling System

Single 120mm silent fan

Form factor

ATX

Noise Level

18dBA minimum

Dimension

150 mm (W) x 86 mm (H) x 140 mm (D)
5.91" (W) x 3.39" (H) x 5.51" (D)

Weight

1.49 Kg

Certification

80 PLUS Bronze

Other

Compatible with ATX12V v2.4