1.The version add the 3.3V/12V power LED, It can directly show the PSU work status. 2.Use this card 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.The main power supply's 4PIN Male is connected with the PSU's 4Pin Female. And the secondary power supply's 24PIN Male is connected with the PSU's 24Pin female. 4.EASY SET-UP with a 4-pin MOLEX main power connector and a 24-pin ATX connector from the source. 5.Plug and play simplicity manages additional power for video cards, hard drives and cooling fans. Product name: ATX power synchronizer Interface: 24PIN+4PIN power interface Product size: 69 x 30mm Material:ABS colour:green Package Contents: 2 x ATX power synchronizerc 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.