Seasonic 24-pin ATX to split into what?

[gaaah]

Hi, I bought the Seasonic Snow Silent 1050W recently and noticed that for
it's power supply cable it is 24-pin at the M/B end but then gets split at the
power supply end into one 2x5 and one 2x9 (which would now be 28 total
pins now wouldn't it?). What do you call this? Is there a term or a new
standard name for it? I want to buy a new much shorter custom PS cable but
don't know what to look for or where to look.

 

[Lutfij]

The best course of action when you can't source supplies for a custom sleeving project by thou is to contact people who have been in it for quite a while. Some names you may find familiar(or not) are:
Ensourced
CableMod ->with these sets
and even ModDIY