The extension cable connects your computer's power supply to the Motherboard.
24 Pin male to 24 Pin female, plug and play, convenient and fast. Safety buckle on the plug to prevent accidental fall off.
24Pin male can be disassembled into (20Pin + 4Pin) males, 24Pin female cannot be disassembled.
The wire sheath is made of PVC, insulated, flame retardant and safer.
Just plug the 24-pin of the main power cable connector into the female plug on your PSU, and then plug the the other end to the motherboard, Plug and play.