The Okuma E4809-820-010-B is a driver board / power supply printed circuit board for Okuma MIV series dual-axis AC servo inverters (commonly paired with models like MIV05-1-B1, MIV0204-1-B1). It provides regulated power distribution, control signal interfacing, and auxiliary drive functions within the inverter unit. Features CN connectors for internal wiring and motor/encoder signals. Part of the E4809 control board family; robust industrial design for reliable multi-axis servo operation in CNC machine tools. Discontinued by manufacturer. [stock available]