A few years back i became obsessed with a greeblie used here, and I still haven't found what is the real part. However in the Brandon Alinger book there is a great reference that i used for the model I made.
This is from the book
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If i can make a suggestion, you can swap the plastic thing you have under the greeblie ( blue arrow) for the terminal connector that is commonly used with that greeblie on the belts of navy troopers.
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You can download it and print it in resin so it looks a bit more accurate. Link:
Imperial Compad Keypad by gucabe on Shapeways
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Sorry for intruding but Its such an amazing work that i couldn't resist.