COOCAT Custom Mod Sleeved Cable, White Cable Extension PC Kit, 18AWG 24Pin ATX / 8 (4+4) Pin EPS / 8 (6+2) Pin PCI-E Power Supply PSU Cable with Combs, 30CM

Q: Will these extensions be used with any corsair psu?

It cannot be plugged directly into Corsair's modular power supply because it is not a modular cable set.

Q: Are these extensions 4.0 pcie compatible a little confused i been hearing that about cables?

There is no conflict, you don't have to be confused about it. PCIE 4.0 refers to the data transmission standard. The function of our extension cable is to supply power to various components, not to transmit data.

Q: Hola muy buenas una pregunta mi fuente de poder es de 550 evga estos cables que venden pueden suvstituir alos originales

Si los remplaza tanto para una fuente modular como no, yo tengo una EVGA 80 plus 750hz y a funcionado sin problema desde hace un año lo recomiendo Saludos Jonathan Valdes

Q: Can these 2 gpu extensions be used with another brand of extensions? My gpu has 3 pci-e slots, and im planning on using 1 from another brand.

You can use it with other brands sure, it's just an extension after all. That said I wouldn't use this brand as the cables crinkle easily and don't look good. There's many other better extensions out there. I'd check those out first.