hello friends
i have IRB2400 M97 s4 controller.
i lost my key disk and also i lost abb lable in front o controller then i dont have any serial number.
i had a cold start because of battery and i need key diskette.
i had a lot of s4c and s4c+ diskette but i need S4 key disk.
Please help me im trying find it for 1 year.