The cable is about 55 cm long as shown in the pictures.
@Jens: Thanx, that's good to know
I don't have an old VGA monitor, but until the software is available I can work with what I have now.
I also tested a few screen modes: PAL & NTSC (HiRes interlaced) work fine, HiGfx works too, but is squeezed and even DBL modes work at least with interlacing (but look squeezed too).
PS.: ...and the new socket fits perfect!