How to find Arduino connected to FreeBSD?

I have programmed Arduino to respond simple commands via USB. Unfortunately, I can't find it and can't communicate with it. My usbconfig returns following: $usbconfig ugen1.1: at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA) ugen0.1: at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA) ugen4.1: at usbus4, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen3.1: at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA) ugen2.1: at usbus2, cfg=0 md=HOST spd=FULL (12Mbps) pwr=SAVE (0mA) ugen3.2: at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA) ugen2.2: at usbus2, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (96mA) Is there Arduino among above? When I try something like screen /dev/ugen2.2 I have screen exiting immediatedly. **UPDATE** Experimentally I found that ugen3.3: at usbus3, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (96mA) appears and disappears according to whether I have connected arduino or not. Unfortunately command screen /dev/ugen2.3 9600 exits with saying '/dev/ugen3.3' is not a tty Sorry, could not find a PTY or TTY.