This half size card provides two serial ports independently configurable as RS422 with and without hand-shaking, or RS485 full or half duplex. This card has on-board zener diodes giving transient spike protection to the inputs, making the card ideal for factory automation installations. The megabaud data transfer rates and the 64 byte deep FIFO, coupled with the RS485 Half Duplex Autogating guarantees uncompromising performance and fault-free use The UART clock can be set to provide maximum baud rates of either 921,600 baud, 460,800 baud, 230,400 baud, or 115,200 baud (standard PC). Serial Solutions Device Driver CD contains software for Windows Millennium, Windows 98, Windows 95, Windows NT4, Windows 3.x, DOS and OS/2. Informative manuals and sample programs are supplied with full source code on CD!