> How can I read data from USB device (USB device is used as Serial device
> with baudrate 9600 ) ?
When you plug in the device, you should see a console message "usb/serial..."
and it will appear as /dev/eiaU*/eiaU if usb/serial has a built-in driver
for it. Otherwise, try the usb/probe command to find the USB vid and did,
and post them here to see if anyone has support for that device.