DM 42 Connect to PC

[Graan]

The solution is to grind off some material of the upper part of the usb connector. Some contacts are obviously different with a shorter metal part (or more plastic). The plastic of the connector will then press against the cover of the DM42 and preventing the contact to seat.
I got this advice from Michael at Swiss Micros, thank you.
He said some contacts are somehow different and it seems all my Samsung charger cables (4) are like this.
So after some grinding, it works fine.