It came with the black adapter cable to go from the antenna wire to the antenna port on the 4620L.
The adapter seems to be too large for the port. When I plug it in the plug only goes into the port about 1/2 of the way and is pretty tight fitting. I do get a signal boost though.
Anyway about 1/2 of the plug is exposed and I'm wondering if this is the way its suppose to fit.