Apparently I was trying to connect my Samsung Galaxy S2 I9100 to my Windows 7 system
- Kies installed – nothing happened
- Drivers from Samsung installed – nothing happened
It kept showing that drivers for CDC were not installed
Finally got the fix from XDA developers forum
We need to switch teh UART and USB settings: Enter UART mode with *#9090# and select "Log via UART" then enter *#7284# and select "UART MODEM" and select "USB PDA"
Now Windows ask normal Samsung drivers!