eduardo 
Hi, I'm working on a project with 2 usb cameras. One camera will be connected on USB1 and another will be connected on USB2 port of micro 2440 SDK. Using above configuration, I have two devices on /dev/: /dev/video0 /dev/video1 My problem is that I need to know which is connected on USB1 and which is connected on USB2. for example, /dev/video0 is on USB2 port (1-1.2), and /dev/video1 is on USB1 port (1-1.1). I tried to write some script calls on /etc/mdev.conf rules (to tell me which USB is being used). This works well when I plug both USB cameras. But it doesn't work well when the system is restarted. Any file on system can tell me that easily (/sys/bus/usb/...)?? Anyway, I'll try to find out why my scripts aren't work properly. Thanks in advance.