Fremont, California-based Accton Technology has two Token Ring interface cards, supporting 4Mbps and 16Mbps. The RingPair-4/16 and the RingPair-MC4/16 support both IBM Type 1 – shielded twisted pair – and Type 3 – unshielded twisted pair – cable on a single card with built-in media filtering. They automatically detect the transmission speed and handle data at either 4Mbps or 16Mbps. The dual-cable connectors are also auto-sensing – no DIP switches are required to accommodate either shielded twisted pair through a standard 9-pin D-type connector, or unshielded twisted-pair cable through an RJ-45 telephone jack. And both cards have 128Kb of memory on board for data buffering. Drivers are provided for Novell’s NetWare, IBM’s PC-LAN Program, IBM 3270 emulation, Microsoft’s LAN Manager, and 3+Open, TCP/IP, and Accton’s peer-to-peer operating system, LanSoft. The RingPair-4/16 is compatible with XT and AT bus micros and the RingPair-MC4/16 is designed to fit in a Micro Channel bus.
