Astrotek AT-U3PCICARD Usb 3.0 4 Port Pcie Add-on Card, Compliant with USB 3.0, backwards compatible with USB 2.0/1.1 devices, Connectors USB 3.0 Type A Female (4 x External) & 4 Way Molex Power, Interface PCI-express, Controller Chipset RENESAS 720201, Ports 4 x USB 3.0. Astrotek USB 3.0 4 Port PCIe Add-on Card Renesas 720201 Chipset.