USB mode works only on one port
Followed all the steps and got my Galaxy Ace 5830i to connect in USB mode but it works on only one of my laptop's USB ports.
When I connect the phone to either of the other two ports, it isn't detected on my laptop and the phone doesn't detect a USB connection. It only charges.
Incidentally, the port that works is a USB 2.0 port and the other two are USB 3.0