Name: S12G-550 Seasonic 550W 80 PLUS Gold Fully Modular Power Supply
Brand: Seasonic
SKU: S12G-550
Price: 282.33 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Seasonic S12G-550 is a 550-watt power supply that fits well into mid-level desktop computers. It provides efficient and reliable power with a modular cable setup and a quiet, smart fan. This unit works well for users seeking a balance between performance, efficiency, and quiet operation in their PC builds.

General Information
Brand	Seasonic
Part Number	S12G-550
Product Type	Desktop Power Supply
Condition	Refurbished

Technical Information
Input Voltage	100-240V AC
Input Frequency	50-60 Hz
Output	+3.3V,+5V,+12V,-12V,+5Vsb
Max. Output Power	550W
Efficiency Rating	80 Plus Gold
Hot Swappable	No
Redundant Support	No
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Single 12V Rail
Number of Fans	1

Compatibility
Form Factor	ATX

Connectors
Connector Types	20+4-pin ATX, 4-pin CPU, 6+2-pin PCIe, SATA, Molex, Floppy

Physical Characteristics
Dimensions	86 x 150 x 140 mm
Weight	3.00

Certifications and Environmental
Compliance Standards	WEEE, RoHS, CE, FCC, UL, TUV, cULus

Product Description
The Seasonic S12G-550 is a 550-watt power supply designed to provide stable, efficient power to desktop computers. It’s built for users who want a dependable unit that balances power and efficiency without unnecessary noise. Often found in mid-range gaming rigs and workstation builds, it supports a variety of hardware configurations. This power supply is commonly used in setups where energy efficiency and quiet operation matter. It benefits PC builders and upgraders who value easy cable management thanks to its fully modular design. Key Features 80 PLUS Gold certified to reduce wasted power and heat Modular cables simplify installation and improve case airflow Reliable 550W output supports modern CPUs and GPUs Hybrid fan control ensures quiet operation under low load Multiple protections safeguard system components You'll typically find the S12G-550 powering desktop PCs in homes, offices, and gaming setups. Its efficiency helps keep electric bills lower, while stable power delivery supports smooth system performance. The quiet fan makes it suitable for noise-sensitive environments without sacrificing power.

Use Cases
The Seasonic S12G-550 power supply is commonly deployed in mid-range desktop systems where consistent and efficient power delivery is critical. It is particularly well-suited to small and medium business (SMB) workstations, system integrators focusing on reliable client builds, and IT departments managing office desktops that require stable energy consumption and quiet operation. How It's Used: Powering SMB office desktops that run productivity suites and light virtualization without compromising energy efficiency. Equipping workstation builds for software developers and engineers requiring steady, clean power for moderate load conditions. Supporting edge computing devices in remote branch offices where quiet operation and modular cable management improve maintenance. Integrating into small-scale storage clusters needing reliable 24/7 power with efficient thermal management. Enabling entry-level gaming rigs or creative workstations where balanced performance and low noise are essential. By delivering a reliable and efficient power source with adaptable cooling, the Seasonic S12G-550 enhances overall system stability and reduces operational costs. Its modular design also facilitates scalability and easy upgrades in diverse IT environments, supporting long-term infrastructure resilience.