PCI-E X1 1 to 4 riser card with high-speed USB 3.0 cable.Supports 4 PCI-E devices Type of interface: pcie X1 PCI-E X16 IC Power management device provide stable power supply. Don't need any driver;Get power supply from 4Pin interface Dedicated for bitcoin minin Attention Please: This extension cable can be applied to the motherboard with spare PCI-E X1 Slot, Please make sure your computer is power off before your plug it in or out. In order not to burn the equipment, please make sure the position is right when you plug a card, in other cases don't plug in or mismatch. In order to avoid breaking the pin, please hold the socket when you plug in. Colour:Blue Material:PC + metal Package Contents: 1 Set x PCI-E 16X Board 1 x PCI-E 1X Riser Card 1 x USB 3.0 Cable(about 60cm) 2 x SATA 15Pin-4Pin Power Cable 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.