This Modular Cable is for "older version" of Seasonic power supply models X400FL, X460FL, X560, X660, X760, X850, X860, X1000, X1050, X1250.

The new version of power supplies changed this particular Modular Cable to our part number SS-18+10~24B.  

The "old version" of X650 and X750 use 16+10 to 24pin connector cable; this cable will not work with them.

Sorry, this cable is no longer avaiable.

The compatible cable is "all black wire" 18+10pin to 24pin connector cable.