Seasonic's Pinout
Seasonic standardized their power supplies for their users through the OneSeasonic initiative.
| Series | Wattage |
|---|---|
PRIME TX | 650W 750W 850W 1000W 1300W 1600W |
PRIME PX | 650W 750W 850W 1000W 1300W 1600W |
PRIME GX | 650W 750W 850W 1000W 1300W |
FOCUS PX | 550W 650W 750W 850W |
FOCUS GX | 550W 650W 750W 850W 1000W |
Vertex PX | 750W 850W 1000W 1200W |
Vertex GX | 750W 850W 1000W 1200W |
CORE GX | 500W 550W 650W |
FOCUS SGX (2021) | 550W 650W 750W |
FOCUS SGX | 450W 500W 650W |
FOCUS SPX | 650W 750W |
PRIME Ultra Titanium | 650W 750W 850W 1000W |
PRIME Ultra Platinum | 550W 650W 750W 850W 1000W |
PRIME Ultra Gold | 550W 650W 750W 850W 1000W |
PRIME Titanium | 650W 750W 850W 1000W 1300W |
PRIME Platinum | 650W 750W 850W 1000W 1200W 1300W |
PRIME Gold | 650W 750W 850W 1000W 1200W 1300W |
FOCUS Plus Platinum | 550W 650W 750W 850W 1000W |
FOCUS Plus Gold | 550W 650W 750W 850W 1000W |
M12II EVO | 520W 620W 750W 850W |
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 and 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 terminal point is labeled, and colored, for viewing.
24 pin ATX cable
The 24 pin cable in Seasonic's pinout will require four double wires to meet the number of endpoints.
ON
SB
OK
OK
SB
ON
GPU PCI-E cables
The 8 pin PCI-E cables will require a double wire to meet the number of ground endpoints on the component end.
CPU EPS cables
The 8 pin and 4 pin EPS cables can be crafted with the connectors flipped to simplify the wiring process.
Peripheral cables
Both the SATA power cable and Molex power cable pinouts are listed here, with the bottom left pin empty on the power supply end.
Additional notes regarding this 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, the 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 pin connector on the component end, and 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 connector on the component end, and 6 pin perif connector on the PSU end.
Molex power
Standard Molex power connector on the component end, and 6 pin perif connector on the PSU end.
12VHPWR cable
There is no integrated 12VHPWR cable documented for these specific power supplies from Seasonic.