I do not own a bachmann EZ Command system, but there has been some debate on other forums regarding the I/O port and the compatability with xpressnet. Although built by Lenz and having similar accessories, the port on the back is an 8-pin jack instead of the normal 6 pin jack. Xpressnet uses a 6 pin jack (like digitrax) but only 4 are actually used - two transmit data, 2 carry the voltage, and two are not used. Has anyone tried to figure out which pins of the jack are used on the bachmann unit? I would think it would be an easy task to measure the pins for the +12v/-12v supplied for xpressnet. I'm guessing two transmit data, two supply voltage and 4 pins (most likely pins 1-2 and 7-8) are unused. Now I know the EZ Command is not a full featured unit (no advanced programming), but it is a good little starter, and if an adapter can be created (8 pin to 6 pin), Lenz boosters and throttles can be added later. Anyone willing to figure this out? Bachmann of course is quite on this subject when asked directly.