Add 4 din rail mountable rs232 serial ports to any system through usb the icusb2324i 4 port industrial usb to serial hub with din rail clips converts a single usb port into four rs232 serial ports enabling you to connect to monitor and control your serial devices featuring rugged metal construction with sturdy wall mounting brackets and top hat din rail clips included this usb to serial hub provides versatile mounting options and a robust solution for both harsh industrial environment