The Studio 500, Studio 700 42HP Skins and 4U 85HP Boats have a large hole suitable for mounting a MIC Power connector.
The 2-pin version should be used for feeding 0V/15V power in to a boat from either a plug-pack or another boat and is normally used in the Studio 500/700 boats.
The 4-pin version should be used for feeding +/-12V power in to a boat from either a power supply like the PSU-10 or another boat and is normally used in the 4U 85HP boats.
