The only evidence that it has ASM functionality is the markings, so how can we rule out the possibility that only those panels are being used?
Compare it to other pylons. Hmm, the one on STA-5/7 doesn’t even look like a TRE. Only the three letters are true. And so, even with MRM, the beginning and the end can look different.
And we forget that the F-2 was integrated with the AAM-4 later than the F-15.
Could it be that the pylon is not shown because it is not actually in operation, even though it actually has the capability?
Yes, that is a possibility. There is a long Japanese word there that has no other candidates. Now let’s look at the other pylons.
One is 4/8 and the other is 3/9. As you know, the 4/8 is marked with GBU, MRM, and TER. On the other hand, the 3/9 is marked with only MRM and TER. Isn’t 3/9 not integrated into GBU?

The answer is no, it only has the MRM markings, but as you know, the GBU will connect and function.
Again, this suggests a shared electrical interface.
This suggests that the electrical interface is shared between GBU and MRM, and at the same time, if the STA-5/7 is marked as GBU or TER, it can also be used as MRM.
(It’s easy to say that there are no GBUs or MRMs! But aren’t there too many markings? Sure, a fuel tank has been added, but there are also four more markings on the outside of the panel :))
Appendix: It seems that Gaijin made all of their pylons using MRM and TER.