Okay today no luck.
There is no cable like this in the virgin in Villagio...I think it is not very well sorted there...
But I bought a map so tomorrow I try first to get the cable in the centrepoint which is near to the place I stay and if I don't get it there try to go to "the One" on Salwa Road...

If anybody has got a good idea where else I could find it please let me know...