Product Detail Install high-speed USB 2.0 capabilities into a non-USB system or add 2 additional ports to your existing USB system Supports USB 2.0; backward compatible with USB 1.1 devices Up to 480 Mbps data transfer speeds Simple installation in low-profile or standard PCI slot Supports plug-and-play and hot swapping . The "Dynex DX-2P2C 2-Port USB 2.0 PCI Card - USB adapter - PCI - USB, Hi-Speed USB - 2 ports" is best product for you. We recommended Dynex DX-2P2C 2-Port USB 2.0 PCI Card - USB adapter - PCI - USB, Hi-Speed USB - 2 ports