The es-u-3001-mb usb-to-rs232 /422 /485 serial adapter is designed to make serial port expansion quick and simple. With din rail kit from taiwan usb to high speed 4 port rs-232/422/485 adapter. I built it anyways but i cannot see my device as /dev/ttyusb0 but i can. Additional information and patches for a ftdi usb/serial converter device driver for linux 2.6.x kernels. Optically isolated industrial serial usb port rs232, and protocols. I think i'm gravitating toward qt at the moment, since there is a gui element anyway.
