The fixing screws that hold it in, looking at it, I thought I had a tool for it. Which tool specifically is it? I've many torx tools with the dimple in the centre, but these screws appear to have 5 points instead of the usual 6.
Edit: After some digging around, I may have the wrong screws. I were looking at the ones directly by the plug, but that may not be how to remove it fully. Will go and check.