1.The new version adds the 3.3V/5V/12V /PS-ON/Standby power LED, It can directly show the PSU work status. 2.Use thispower adapter to turn on and off the two power supplies with low power at the same time, thereby increasing the power of the power supply. 3. you can connect molex 4Pin/SATA/ATX 6Pin/4Pin cable any one from the main PSU to this power adapter, and the secondary power supply's 24PIN Male is connected with the PSU's 24Pin female. 4.Plug and play simplicity manages additional power for video cards, hard drives and cooling fans. Precautions: Plug must be clear when the direction, do not plug or insert offset, to prevent burn equipment, plug the first device when the socket and then plug , to avoid excessive force will plug the pin cut. Colour:black+white Material:PCB+Plastic+Metal Size:83.5x30mm Package Contents: 2 x ATX power synchronizer Only the above package content, other products are not included. Note: Light 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.