Same six-wire connectors in front as UTP but allows use of off-the-shelf CAT5 cables to connect panel-to-panel at rear. can be used as a cab bus splitter and also adds the ability to add power to the cab bus for larger layouts.
There are 2 versions of the CAT5, the older version has 4 jacks total 2- RJ12 front / 2-RJ45 rear
The new version (V2) has 6 jacks total 4-RJ12 ( 2 front/ 2 side) / 2-RJ45 in the rear
The part number is the same 524-0234 the price went up $5 when the 2nd set of jacks were added on the newer version.