Allowing you to connect an additional PSU to your ATX. Designed for intense Gamining and BitCoin Mining; Material: 18AWG Length: main cable 12inches + secondary cable 12inches (30cm+30cm) Length: 32cm/1ft.Interface: 5557 24pin (20+4) at one end, 5559 24Pin at the other end. Both PSU will be powered up by one single motherboard. Use a second PSU to power multiple graphics cards. NOTE: If there are pins off, you can plug back in the direction of the slot, does not affect the use!