Product name: PCI-E riser card     Theoretical transmission rate: 5GB/S     Onboard interface: 1*USB3.0 TYPE-A, 4*4P power interface, 4*PCI-E X16 card slot     Versatility: PCI-E1X, PCI-E2X, PCI-E 4X, PCI-E 8X, PCI-E16X are all available     Support All WINDOWS/Linux/Mac operating system     size:176x150x19mm     Material:PCB+metal     colour:blue          Package Contents:     1 * PCI-E 16X expansion board     1 * PCI-E 1X adapter     1 * SATA power cord     1 * USB cable          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 measurement allowed error is +/- 1-3cm.