I am trying to connect an IOIO board (sort of an Arduino for Android) to my Ubuntu 12.04 laptop via a USB connection so that I can program it with Eclipse and the Android SDK.

The rules file is called 50-ioio.rules and the the text is:

ACTION=="add", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{idVendor}=="1b4f", ATTRS{idProduct}=="0008", SYMLINK+="IOIO%n", MODE="666"
I copied this file to the udev rules directory using:

sudo cp 50-ioio.rules /etc/udev/rules.d
I then restarted udev using:

sudo restart udev
However when I connect the IOIO board via a USB cable and look for the serial port with

ls /dev/IOIO*
I get the message

ls: cannot access /dev/IOIO*: No such file or directory
Can anyone explain what I am doing wrong?