PCIe x1 to Dual USB 3.0 19Pin Internal Headers Expansion Card For USB Front Panel, Internal Card Reader,USB Hub Expansion The TWO 19Pin USB 3.0 Headers will extend to Desktop PCs Front Panel 4X USB-A Ports Supports USB 3.0 5Gbps Data Transfer and 5V1A Power Supply PCIe X1 interface is requested, will works on PCIe X1, X2, X4, X8, X16 slot, Does not work on PCI slot!