I've got a noname usb-serial adaptor (that works in Ubuntu) plugged into my TomatoUSB router. When I plug it in I see that a new device under /dev shows up. However, how do I know what file to open under /dev? I was expecting to see a /dev/ttyUSB0 or something. I tried all the reasonable looking things in there but none are it.
I also tried insmod'ing usbserial and ftdi_io in case that would help it along. No difference. Any help from someone that has had success would be appreciated!