Dual psu power supply 24-Pin ATX connectors cable:Allowing to connect 2 PSU's to your ATX motherboard and they both power on the components. Compatible with 24 pin and 20 pin ATX motherboards:The male plug of the mainboard is a 5557 24pin (20+4) at one end, 5559 24Pin at the other end,and the 20Pin old mainboard can also be used. Without upgrade Power Supply Units:Both 2 Power Supply Units be powered up by one single motherboard.Use a second PSU to power multiple graphics cards without having to upgrade your existing Power supply unit. Easy to use:Just plug the 24-pin of the main power cable connector into the male plug on your PSU, and then plug the the other end to the motherboard, and plug the secondary power supply into another 24PIN female plug to switch the power at the same time. Wide fit:Allows you to connect other PSUs to the ATX motherboard, which is very suitable for mining versions (like the BitCoin Mining )and dual PSU games.And worked perfectly with . colour: black Material: PVC Size: about 30cm Package Contents: 4 x 24 Pin Dual PSU Power Supply Extension Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.