With advantech interface converters such as the advantech usb 4604b you can overcome the limits of communication between individual components of your system repeater and converter bridge up to 12 km where the baud rate can lie between 1200 bps and 1152 kbps with automatic flow control with the help of usb 4600 modules serial devices can be connected to pcs without opening the housing or the system are shut down the high speed rs 232422485 ports are immediately available the power sup