iOptron CEM60 EC USB lock block

Fed up with wobbly B Type USB cables falling out of the back of my CEM60 EC and ipolar, I have designed this block to fit into the 3 screws at the back of the mount.

Notes

1. if you need the 6P6C port, this won't work as the block covers it.
2. You need standard M6 bolts to tighten this, I printed some from here https://www.thingiverse.com/thing:193647
3. You need m3 bolts that are 20mm long. Again, you can print them out, I happened to have a box of these that already included https://www.amazon.co.uk/gp/product/B07919Z9SL/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

ED: v1.1 uploaded 1st April with indented screwholes.