PCI-E X1 1 to 4 riser card with high speed USB 3.0 cable Supports 4 PCI-E devices Interface type: pcie X1 One to Four PCI-E . No driver needed; Get power from 4Pin interface Dedicated for Bitcoin Minin Attention please: This extension cable can be applied to motherboard with spare PCI-E X1 slot, please make sure your computer is turned off before plugging or unplugging it. In order not to burn the equipment, please make sure the position is correct when plugging in a card, in other cases do not plug or do not match. In order to avoid breaking the pin, please hold the plug when plugging it in. Color: Blue Material: PC + metal Package Contents: 1 set x PCI-E 16X card 1 x PCI-E 1X riser card 1 x USB 3.0 cable (about 60cm) 2 x SATA 15pin power cable -4 pin Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm.