NEC D720102GC 4-Port USB 2.0 PCI Controller Card NEC 4 Port USB 2.0 PCI Controller Card General Features: NECD720102GC chipset 32-bit PCI interface USB 2.0 compliant 480 Mbps maximum data transfer rate Compliant with Open Host Controller Interface Specification USB Rev. 1.0A Compliant with Enhanced Host Controller Interface Specification USB Rev. 0.95 Supports up to 128 devices