Tenext PCI Express 2-Port SuperSpeed USB 3.0 Controller Card with Molex Power and Low Profile Bracket (Fulfilled By Amazon) NEC Renesas &micro;PD720202 chipset SuperSpeed USB 3.0 supports transfer rates of up to 5Gbps Backwards compatible with USB 2.0 and 1.1 devices Compatible with Windows XP/Vista/7/8 and major Linux distribution Shipped directly from one of Amazon's warehouses in the United States FREE shipping on Amazon Prime or SuperSaver on combined eligible order