Seasonic S12III 550W - Power supply, 80 Plus Bronze
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Key Specifications
Choose one or multiple features to search for items that have the same specifications.Ports & interfaces | |
Floppy disk drive connector | ![]() |
Motherboard power connector | 20+4 pin ATX |
Floppy drive power connector | 1 |
Number of SATA power connectors | 6 |
Peripheral (Molex) power connectors (4-pin) | 3 |
PCI Express power connectors (8-pin) | 2 |
CPU P4 connector (4-pin) | 1 |
Cabling type | Non-Modular |
Motherboard power cable length | 55 cm |
SATA power cable length | 450 mm |
CPU power cable length | 60 cm |
Peripheral (Molex) power cable length | 450 mm |
PCI Express power cable length | 55 cm |
Floppy disk drive cable length | 12 cm |
Weight & dimensions | |
Height | 86 mm |
Width | 150 mm |
Depth | 140 mm |
Energy management | |
Input current | 8 - 4 A |
Nominal power | 550 W |
Power protection features | Over power, Over voltage, Short circuit, Under voltage |
Combined power (+3.3V) | 100 W |
Combined power (+12V) | 546 W |
Combined power (+5V) | 100 W |
Combined power (-12V) | 6 W |
Combined power (+5Vsb) | 12.5 W |
Max output current (+3.3V) | 20 A |
Max output current (+12V) | 45.5 A |
Max output current (+5V) | 20 A |
Max output current (-12V) | 6 A |
Max output current (+5Vsb) | 2.5 A |
AC input frequency | 50 - 60 Hz |
AC input voltage | 100 - 240 V |
Total power | 550 W |
Operational conditions | |
Operating temperature (T-T) | 0 - 40 °C |
Packaging data | |
Manual | ![]() |
Package type | Box |
Certificates | |
80 PLUS certification | 80 PLUS Gold |
Packaging content | |
Cables included | AC |
Design | |
Product colour | Black |
On/off switch | ![]() |
Cooling type | Active |
Fan diameter | 12 cm |
Performance | |
Certification | WEEE, REACH |
Mean time between failures (MTBF) | 100000 h |
Safety | cTUVus, TUV, Gost-R, CB , BSMI, CCC, CE, FCC, C-tick |
Purpose | PC |
Bearing technology | Sleeve |
Power supply unit (PSU) form factor | ATX |
EAN | 4711173875208 |
S12III SERIES
The S12III Bronze Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system. The Seasonic S12III-Series achieves 80 PLUS® Bronze standard of providing at least 82 %, 85 % and 82 % power usage efficiency at 20 %, 50 % and 100 % operating loads, respectively. This efficiency, combined with Active Power Factor Correction, enables the S12III Bronze series power supplies to lessen energy waste, which translates into savings on the costs of energy costs for its users. In addition to being greatly efficient, the S12III units utilize the LLC resonant converter design, and the industry’s leading Smart and Silent Fan Control (S2FC).
80 PLUS®BRONZE
The 80 PLUS® Bronze certification indicates that a high percentage of the electricity is converted into useful power, therefore there is less heat lost and more money saved on the electricity bill.
The 80 PLUS® Bronze certification guarantees greater than 82 %, 85 % and 82 % efficiency at 20 %, 50 % and 100 % operating loads, respectively. Sea Sonic’s Bronze Series is an economical choice with great performance and high built-in value.
S2FC - SMART AND SILENT FAN CONTROL
The intelligent thermal circuit feature is designed to find the optimal balance between the necessity to cool the components and the need to run the power supply in the most silent manner possible.
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