Serial Hubs from American Portwell Technology Inc.
USB Serial Communication Port Device -- USB-IIRO4-2SM
USB 4-port hub internally to provide four optically isolated digital inputs, four digital electromechanical relay outputs and two ports of RS-232/422/485 serial communication in a small rugged enclosure with DB25 connector for digital and two DB9 connectors for serial.
Specifications
Product Category
Serial Hubs
Device Type
Hub
Serial Protocol
RS232/422/485
Network / Bus
USB; PC/104 (PC/104-Plus, EBX, ETX)
Data Rate
922 kbps
Number of Ports
4