Rosewill 2-Port USB 3.0 PCI Express Card Model RC-505

Type: PCI Express to USB Card External USB Ports: 2 x USB 3.0 Ports Standard: USB 3.0 Data Transfer Rate: Up to 5.0 Gbps Operating Systems Supported: Windows XP/Vista/7 (32/64 bit) Features: Fully compliant with PCI Express Base Specification Revision 2.0 Single-lane (x1) PCI Express throughput rates up to 5 Gbps Compliant with Universal Serial Bus 3.0 specification Revision 1.0 Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices Supports the following speed data rates as follows: Low-speed (1.5Mbps) / Full-speed (12Mbps) / Parts: 1 year limited Labor: 1 year limited