Mac OS analog to /dev/ttyUSBxx

Question

I used to linux USB port naming, aka /dev/ttyUSBxx and currently trying to write some test software to read/wrtie raw data to USB ports on iMac, but i find it hard to detect to

Answer 1

I have a SheevaPlug that acts as a USB serial device and that appears as /dev/tty.usbserial-XXXX.