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I had asked the same thing a while back; apparently, it's something that was put in for a future capability that was never realized.
It shouldn't be just hanging there: I managed to figure out that the bracket it's attached to fits nicely under the top left plastic screw that holds the DME / KLR bracket, leaving this non-functional block properly orientated for future diagnostic equipment easy plugin.
Never understood why simple Eastern European / Turkish coffee isn't more popular in N America; so much simpler to make, no special machines needed, and imho far more tasty