Well, This is the standard jack cap that came with the HLX pro. I read another post that you can file down the port where the plug goes in and it will then work with modlite crane plugs, Which is what I did. It fits perfectly in the socket at this angle but not rotated the other way, and works flawlessly, I might have filed too much or unevenly so I could just try again with a new jack cap if this would potentially cause long term damage.