Seasonic's pinout
Seasonic standardized their power supplies for their
users through the OneSeasonic initiative.
Reading the
compatibility
tables and pinouts
The table above outlines which power supply series, and individual units within, are compatible with the defined pinout. While a majority of the power supplies are listed, there are several that I have not been able to test or verify to include in the table.
Cross-compatibility
Some power supplies share the same pinout with other series within the brand, and also with other companies, as a result of a similar OEM. To verify compatibility, it is important to check the wiring and connector variants of each cable before usage.
Double wires
Double wires, for some cables, are required to meet the number of matching endpoints on the power supply end of the connector. This would involve splicing and soldering a second wire to insert in a pin sharing the same voltage as the component end.
Pinout diagrams
All pinout diagrams are viewed from the rear of the connector where the wires enter, except for the PSU key, which is viewed from the front. The clip is positioned on top of the connector, and each individual pin is labeled, and colored, for viewing.
Explore Seasonic's pinout wiring and connectors
From voltages to PSU keys, get a jump start on your next sleeving project with reference pinouts separated by connector type.
Only use pinouts as a reference point
You should always verify and test your own power supplies before using custom cables.
The 24 pin cable in Seasonic's pinout will require four double wires to meet the number of endpoints.
The 8 pin PCI-E cables will require a double wire to meet the number of endpoints on the component end.
The 8 pin EPS cable can be crafted with its connectors flipped to simplify the wiring process.
Both the SATA power cable and Molex power cable pinouts feature an empty bottom left pin on the power supply end.
Additional notes regarding this power supply pinout
It is important to only use this pinout as a reference for your project, and not as the sole source of information. While I do my best to test, and verify, available cables and compatible power supplies, double checking your own unit's cables before usage is required.
Flipping connectors
It is possible, and recommended, to flip the 8 pin EPS cables on the PSU end to simplify the wiring when crafting your own custom sleeved PC cables.
Double wires
The documented Seasonic pinout features four double wires on the 24 pin cable, and one for each 8 pin PCI-E cable, which will require some time to complete.
Reusability
As a result of Seasonic standizing their cables, and pinouts, across several of their power supplies, it is easy to reuse cables across individual units.
24 pin ATX cable
Standard 24 ATX pin connectors on the component end, and both the 10 pin and 18 pin connectors on the PSU end.
PCI-E cables
Standard 8 pin PCI-E connectors on the component end, and 8 pin PCI-E connectors on the PSU end.
EPS cables
Standard 8 pin EPS connectors on the component end, and 8 pin PCI-E connectors on the PSU end.
SATA power
Standard SATA power connectors on the component end, and 6 pin perif connectors on the PSU end.
Molex power
Standard Molex power connectors on the component end, and 6 pin perif connectors on the PSU end.
12VHPWR cable
The 12VHPWR cable's availability in certain pinouts or power supplies is pending further testing and feedback.
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Go back up to view the Seasonic pinout, or look for a different one in the collection.