Bus Type of PCI Express X4 3.0 interface, Compatible with PCI Express x4, x8 and x16 Slot. Rear 6-port SATA3.0 interface for easy wiring. Compatible with SATA 6G, 3G and 1.5G hard drives. Compliant with PCI-Experss specification V2.0 and backward compatible with PCI-Express 1.x Support Transmission rate: 6Gbps Bus type: PCI-E X1, compatible with PCI-E X4/X8/X16 and other interfaces Bus speed: PCI-E 3.0 Interface: SATA III Colour:black Material:PC+metal Package Contents: 1 x Interface expansion card 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.