These cables may work with other power supplies, most likely other sizes of X series, and possibly other brands OEM'd by Seasonic. However ANY OTHER USE IS AT YOUR OWN RISK AND MISMATCHED CABLES COULD DESTROY YOUR DRIVES. TEST WITH A MULTIMETER AND DO NOT ATTEMPT TO FORCE CONNECTIONS. PSU CABLES ARE NOT STANDARD ON THE PSU SIDE. THIS SET IS SATA/IDE ONLY, other PC power cables not included.