Seasonic 8-pin +12V cable will not fit any motherboard

[BadCop]

Hi ATers,

I recently bought a Seasonic X-Series SS-400FL fanless PSU. Included in the package is an 8-pin +12V power cable. Here is a picture:

The top connector slots into the modular "CPU" port on the back of the PSU just fine. But the split connector will not make an 8-pin connection to any motherboard that I'm aware of. The right half is simply keyed differently that the ATX_12V plugs of my Gigabyte GA-A75-D3H and Asus F1A75-V PRO. And I've checked the manuals for other popular motherboards like the Biostar TZ68A+ and can confirm that they are also keyed differently.

Does anyone know why this cable has a strange connector? The PSU is supposedly EPS12V-compliant, doesn't that mean that the cable's bottom connector should be keyed like the top one? Is this defective by design?

P.S.: I confirmed with a Seasonic rep that I don't have a one-off manufacturing error, so this is actually what ships with every model.

P.P.S.: I'm aware that I can use only one half of the split connector to make a "P4"-style connection. But I want an 8-pin connection!

 

[lehtv]

Did you actually try fitting it in? The plug with the corners cut off should fit into a square shaped slot, shouldn't it?

 

[Accord99]

The Seasonic X-660 also has the same cable connector. Despite some concerns, I plugged it into an Asus P8P67 Deluxe and have no problems.

 

[Maximilian]

I have this PSU, works fine here. :\

 

[BadCop]

Thanks guys!

I actually wrote this on behalf of my cousin overseas. After lehtv's reply I called and told him that the rounded-corner plugs should fit in the square holes and to try again. He did, and confirmed that the PSU works fine.

Cheers

 

[billyb0b]

face palm!

 

[Meghan54]

face palm!

Know what's funnier? That's the way ALL 8-pin ATX connectors are designed. Nothing odd found in the OP.