Compliant with PCI-Experss. Compliance with Serial Specification 3.0. Bus Type of PCI Express X4 2.0 interface. The supported communication rates are 6.0 Gbps. Self-identified 20 ports, no need to drive. Hot swap and heat exchange. Itemname:PCIE 4X to SATA Card Interface: PCI-E 4X Interface rate: 6Gbps Function: for Mining Main control chip: ASMedia1064 System support: WIN10 LINUX Colour: black Material: plastic Package Contents: 1 set * PCIE 20 -Port SATA3.0 Card for Mining and cable 20 * Cables 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.