Which one of the following is not can be used for hard copy output device?

Which one of the following is not can be used for hard copy output device?

ہارڈ کاپی آؤٹ پٹ ڈیوائس کے لئے مندرجہ ذیل میں سے کون سا استعمال نہیں کیا جاسکتا؟
Explanation

A Speaker is an audio output device and cannot produce hard copies (physical prints).

Devices like printers, impact printers, and plotters are used to generate hard copy outputs.