1. Dual power supply synchronous starting cable.It can startup or shutdown two low power supply synchronously to increase power supply. 2. No cutting wires or soldering, no compromising the integrity or function of your pc. 3. This card can make two power at the same time switch machine, the graphics card power distribution to the two power on behalf of the use of high-power power supply. 4. Suitable for your Bitcoin, Litecoin Mining machines. 5. PCB, to use, provide much convenience to your . Interface: ATX24P PIN 24 Pin Duel power start line Size:(L)X(W)7x3cm/2.76inchx1.18inch() Supporting system: Linux / xp / win7,8,10 The extension line card 6P interface (Max 16A power supply capacity) Wiring Method: 1.Please plug the main power supply 24PIN into the 24PIN female head, and plug the other end to the mainboard. 2.And then plug the detection port 4pin power cord of secondary power supply into the riser card. 3.Then it can be realized that the secondary power supply and the main power supply are on and off at the same time, lengthening the service life of power supply and graphics card. Material:PCB colour:Green Package Contents: 4 x Add2PSU Multiple Power Supply Adapter 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.