noun
grounded plug; plug with earth terminal
Computing/electronics term for a plug that includes a grounding (earth) connection.
この機器にはアース端子付きプラグを使用してください。
Please use a grounded plug for this device.
プラグ is a general plug; アース端子付きプラグ specifies a grounded type.
Compound of アース (earth/ground), 端子 (terminal), 付き (with), and プラグ (plug).