The Token-Ring PCI Adapter is a high-performance, token-ring local area network (LAN) adapter designed to operate with system units that support the Peripheral Component Interconnect (PCI) bus interface. The adapter supports operation at either 4Mbps or 16Mbps over unshielded twisted-pair (UTP) or shielded twisted-pair (STP) media. It is particularly well suited for servers and high-end workstations, especially for network workstations running I/O-intensive applications. The Token-Ring PCI Adapter uses the IEEE-802.5 standard for communications.