Product Detail I/O Crest SY-PEX20032 4-Port USB 2.0 PCI Express x1 Controller Card General Features: MosChip MCS9990 chipset Compliant with PCI Express 1.0a specifications Single-lane PCI Express x1 throughput rates of up to 2.5 Gbps Compliant with USB 2.0 specifications Four (4) USB 2.0 ports Supports Plug Play and hot plug support Complies with Open Host Controller (OHCI) specifications . The "Syba I/O Crest PCI-Express 4 Ports USB 2.0 Controller Card MCS9990 Chipset" is best product for you. We recommended Syba I/O Crest PCI-Express 4 Ports USB 2.0 Controller Card MCS9990 Chipset