I went through the entire back panel again and did not see anywhere this plugged in. It almost looks like an old scsi connector. Maybe it plugged into a pc.
Call Mazak and have them email you the procedure how to install this option unless you can find it on line.
This ROM cartridge plugs in where your other ROM's are in main electrical cabinet, if you look close you will see 2 original ROM's installed marked QX812 on T-Plus control.
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