XCSOURCE 4 Ports PCI-E to USB 3.0 Expansion Card - Interface USB 3.0 4-Port PCI-Express Card Desktop For Windows XP / Vista / 7 / 8 AC318 Compliant with USB 3.0 USB 2.0 USB 1.1. Date transfer rate up to 5.0Gbps / 625MB/s. 2 external and 2 internal USB 3.0 type A female connectors. Supports Windows XP / Vista / 7 / 8. You can connect to the PCI Express card USB 3.0 devices such as card readers, printers, scanners, MP3 players, etc.