Cogent Data Technologies Inc, Friday Harbor, Washington, has introduced a line of Ethernet adaptor cards for networking personal computers running Santa Cruz Operation Inc’s SCO Open Desktop to Unix systems, and fault-tolerant, high-speed disk controllers for Open Desktop, Unix and Xenix-based systems. The E/Master Ethernet cards support AT bus, PS/2 Micro Channel and EISA bus-based machines and drivers include those for AT&T Streams LLI for Unix applications. MS-DOS and OS/2 communications are supported via NetBIOS and TCP/IP drivers, and a Network File System protocal module is available for connecting to Sun Microsystems workstations. Cogent claims a file transfer rate of two megabits per second and prices start at $700 per E/Master card. The DiskMaster/x disk controller is said to have automatic fault detection and recovery facilities such as drive mirroring and dynamic hot fixing of bad media. It supports up to four hard drives and can accommodate AT-class ST506 and high-capacity EDSI hard disks in any combination. It comes with drivers for SCO Open Desktop 1.00 and SCO Xenix 386 version 2.3. Out now, it costs $700.