The Okuma E4809-770-120-A is an I/O control printed circuit board for Okuma OPUS 7000 CNC control systems. It provides digital I/O signal processing, interfacing, and expansion for machine tool peripherals, safety signals, and automation control. Part of the E4809 series with multiple CN connectors for reliable wiring and integration into control racks. Compact industrial design ensures stable performance in precision CNC environments. Discontinued by manufacturer; widely used in legacy Okuma machine tool upgrades. [stock available]