input-output unit; I/O device
Technical computing term for a hardware unit or device that handles both input and output operations.
This computer is equipped with a high-speed input-output unit.
入出力装置 is a more common term for input-output device; 入出力機構 is a slightly more technical or formal variant often used in hardware architecture contexts.
Compound of 入出力 (input-output) and 機構 (mechanism, unit).