TCU without antenna connector

I’m looking for a TCU to retrofit into a 2013 fusion hybrid. I’ve seen a lot of h series from fusions that don’t have a visible antenna connector. Does anyone know if these work? Is there a connector underneath the plastic casing?

This is one of the TCUs that I’m referring to.
s-l400

That definitely looks like the old 3G TCU. Same size and shape as the one pulled out of my C-Max when I upgraded. The lack of antenna connector would also be a giveaway of this. Of all the discussions surrounding the Ford 4G TCU’s they all have external antenna connectors as best I can tell.

That TCU is no longer supported by Ford or the wireless network.

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