This is a Matrix video wall quad controller for generation 1 video wall displays 24 Volt.. (Will not work for G2 or G3 systems, 48V) you will need to configure this controller to work with your displays through your remote control on one of the displays.

Removed from working environment, Tested and working.
This is a 750-1912-02 but it can replace a 750-1912-01 or -03 as that is just the version number.

I have power supplies, cables, screens, and mounting brackets for these same units on other listings