check the board and the controller to locate the ground pin /receptacle. unless the ground is located at the center that should give you a clue to the orientation when it is plugged back in. My 2 cents worth ,as i know nothing about the controller/bd. your using. -- Doug N3DAB/WPRX486/WPJL709
---- John Everson <[email protected]> wrote: ============= Hello to the group. I recently purchased an 850 controller with a repeater. The controller did not work when I powered it up. Upon inspection, I found that the MX- 4 memory board (aftermarket I assume) had come unplugged from the main board. My question is, which way does it plug in? The connector is not keyed. The MX-4 sits perpendicular to the main board. So, does the board sit over the top of the main board, or the other direction, facing the phone patch board? I have no documentation for the MX-4 so I am a bit in the dark. Thanks in advance. John AB6LI
