主要特点
rs-485模式下的自动数据流控制

4个独立的rs-232/422/485串行端口

传输速率可达115.2 kbps

中断（跳线选择）：3, 4, 5, 7, 9, 10, 11, 12 或 15
支持更高数据吞吐量的中断状态寄存器
automatic data flow control in rs-485 mode
rs-422 or rs-485 modes jumper se-lectable
sPACe reserved for optional surge protection on all port lines (in rs-422/485 modes)
space reserved for termination resistors
compatible with arcnet? 4-port cards supporting sco unix/xenix
supports windows? 98/2000/xp, linux?
powerful and easy-to-use utility