Yes, the L4 always had it. Even if it's not used, it allows for swapping different input plates:
I was also going to include a mounting bracket for the HDPLEX 80W and 160W AC-DC units, but I'm not sure about that idea as the mounting holes seem to change with every new release.
I was also going to include a mounting bracket for the HDPLEX 80W and 160W AC-DC units, but I'm not sure about that idea as the mounting holes seem to change with every new release.