Product Detail NEC 2-Port USB 2.0 1-Port Serial PCI Combo Card General Features: NEC (d720102) controller chip PCI interface Two (2) USB 2.0 ports Supports high speed data transfer rate up to 480 Mbps One (1) 9-pin Serial port Plug and Play compatible Support 127 devices Regulatory Approvals: FCC . The "SYBA Combo USB 2.0 2-Port / Serial 1-Port PCI Card SY-NECPL-2U1S" is best product for you. We recommended SYBA Combo USB 2.0 2-Port / Serial 1-Port PCI Card SY-NECPL-2U1S