Hopefully I word this so google translate works well.
I believe that you don't mean Xenon, because Xenon does not need a ballast.
With HID, it is most often a Magnetic or Electronic ballast.
With a low powered lamp like you would see in a car, a magnetic ballast is uncommon. A magnetic ballast will not perform as well. A magnetic ballast will use more power, it will start up slower, it will restart slower.
I have not seen enough to tell them apart. If I had to guess I would say the one you are showing is electronic because the transformer is smaller than the full power of the lamp and it is using a lot of electronics and a transistor in the final stage (the output).