SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply

SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply

SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply

SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply

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Expected availability: 7-10 business days

Product Highlights

  • 540W Single +12V Rail
  • 120mm Cooling Fan
  • Intel ATX12V
  • 2 x PCI-E Connectors
  • 6 x SATA Connectors
  • 3 x 4-Pin Molex Connectors
  • Flat, Low-Profile Cables
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Wattage: 550W


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B&H $500 Gift Card Dash

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Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

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SeaSonic Electronics Focus Series SSR-550F overview

  • 1Description

The Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply from Seasonic is designed to provide high-end systems with clean, continuous power. The semi-modular design allows you to connect the cables you need and store the rest for less cable clutter and improved airflow. It's built with a 120mm cooling fan and utilizes Seasonic's Smart and Silent Fan Control to keep it operating quietly and efficiently.

80 Plus Gold
The Focus Gold series has an 80 Plus Gold rating, ensuring greater than 87%, 90%, and 87% efficiency at 20%, 50%, and 100% operating loads, respectively.
Semi-Modular Cables
With semi-modular cables, only the 24-pin and 8-pin ATX power cables are permanently attached. The rest of the cables can be connected as needed.
S2FC - Smart and Silent Fan Control
Seasonic's Smart and Silent Fan Control provides you with an optimal balance between cooling efficiency, power draw, and noise.
In the Box
SeaSonic Electronics Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply
  • 24/20-Pin ATX Cable
  • 8/4-Pins CPU Cables
  • 8/6-Pin PCIe Cables
  • 2 x SATA Cables
  • Peripheral Cables
  • Floppy Cable
  • Limited 7-Year Warranty
  • Table of Contents
    • 1Description

    SeaSonic Electronics Focus Series SSR-550F specs

    Power Specifications
    AC Input 100 - 240 VAC
    Current 8 - 4 A
    Frequency 50 - 60 Hz
    Output +3.3 V - 20 A
    +5 V - 20 A
    100 W

    +12 V - 45 A
    540 W

    -12 V - 0.3 A
    3.6 W

    +5 VSB - 3 A
    15 W
    Cables 1 x 24/20-pin ATX 24" (610 mm)
    1 x 8/4-pin CPU 25.6" (650 mm)
    1 x 8/6-pin PCIe 26.57" (675 mm)
    2 x SATA 17.72" (450 mm)
    1 x Peripheral 17.72" (450 mm)
    1 x Floppy 3.98" (101 mm)
    Fan Information
    Fan Size 120 mm
    Fan Control Premium Hybrid Fan Control
    Fan Bearing S2FC
    Life Expectancy 50,000 hours at 104°F (40°C), 15 - 65% RH
    Environmental Specifications
    Operating temperature 32 - 122°F (0 - 50°C)
    (derating from 100 % to 80 % from 40 °C to 50 °C)
    MTBF 100,000 hours at 77°F (25°C), excluding fan
    Safety and Environmental cTUVus, TUV, CB, CCC, BSMI, EAC, CE, Energy Star, RoHS, WEEE, ErP Lot 6, REACH
    80 PLUS Certification Gold
    Form Factor Intel ATX 12V
    Dimensions (W x L x H) 5.51 x 5.91 x 3.39" (140 x 150 x 86 mm)
    Packaging Info
    Package Weight 5.55 lb
    Box Dimensions (LxWxH) 10.9 x 7.2 x 4.6"

    SeaSonic Electronics Focus Series SSR-550F reviews

    Focus Gold Series 550W 80 Plus Gold Modular ATX Power Supply is rated 5.0 out of 5 by 12.
    Rated 5 out of 5 by from My second Seasonic PSU - a solid, well-designed unit! This is my second timing using a Seasonic power supply to build a computer. I selected this PSU because of its positive reviews, semi-modular cables (for mini-ITX) and affordable price. Special thanks to B&H for being an excellent seller, too. Ive bought four items from B&H over the past two years, and Ive been constantly impressed by the fast shipping and customer service (for timely communication when an item was backordered). Pros:  - 7-year warranty - Solid construction and packaging - Easy cable management - Gold level efficiency - Good size - Quiet Cons:  - Not a negative, but during my decision-making process I read a positive review with a small concern about this units single PCI-e cable powering a high-end graphics card. This concern is present among many power supplies, and it is better to err on the side of caution when looking to power a high-end graphics card. Since I installed a mid-tier graphics card, it was absolutely not a problem for this PSU.
    Date published: 2018-11-08
    Rated 5 out of 5 by from Great PSU for Single GPU Build This 550W PS is sufficient for all but the highest end single GPU builds, particularly with more power efficient nVidia cards.  My unit arrived in just a few days, and packaging was superb.  A power cord and cables ties were included.  The PS performs without a hitch in my build (i5-8600k, nVidia GPU, 3 drives), and it is near silent even when gaming or rendering video.  I have had great service from SeaSonic PS units in the past and expect no less from this one based on initial setup and performance.
    Date published: 2018-11-18
    Rated 5 out of 5 by from Great product for the price Pros: Worked well right out of the box -quiet -high quality cables -lots of zip ties & Velcro ties Cons: None so far Other Thoughts: Expect nothing but the best from seasonic
    Date published: 2018-09-13
    Rated 5 out of 5 by from Great PSU for the price Power supply works great! Would definitely recommend! Shipping was also really fast
    Date published: 2018-10-28
    Rated 5 out of 5 by from Great Value for Single GPU Build PS arrived in perfect condition.  Packaging was very secure.  Power cord is included, which is not the case with some other brands. All cables were in good condition and more than adequate length for my mATX build.  Installed in new build with i5-8600k, nVidia GPU, and 3 drives.  PS is near silent, even when gaming or encoding.  No complaints or issues.  I have had great service from SeaSonic PS units over the years and look forward to the same from this unit.
    Date published: 2018-11-18
    Rated 5 out of 5 by from Very easy installation Was surprised to see it had way less cables than the G-series model, but happy they extended the CPU power cable this time around as I couldnt thread the G-series CPU cable behind the case as it was too short.  I also prefer the design on this model, (not that I get to see it after its installed) the gold looks better than the blue IMO and makes sense considering its gold rated.
    Date published: 2018-11-21
    Rated 5 out of 5 by from Perfect for my needs Enough power for my needs for a vastly upgraded gaming system. Build quality is top notch, and it all came nicely packaged. Super easy to install.
    Date published: 2018-11-16
    Rated 5 out of 5 by from Perfect - Enough power for my gaming system. - Top notch build quality. - Easy installation. - Inexpensive. - Nicely package.
    Date published: 2018-11-16
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