Hi All! I would like to use the asio library to communicate through usb with some devices. I looked the documentation, and searched the internet. It was said that it can be done, but I could not find any specific information. I found a code for (old) serial ports, it mentioned the usb, but nothing more. I think the important parts were: boost::asio::serial_port port; port.open(devname); port.set_option(***); where one can set these options boost::asio::serial_port_base::baud_rate, parity, character_size, flow_control, stop_bits Are these option also available for usb ports? For example the data flows (found by be) are not the same. Thanks beforehand for your reply and help. Laci