This is the 3743rd most frequent Korean word.
설치한
"설치한" means "installed."
The word '설치한' is used to describe the air conditioner that was installed recently, functioning as an adjective.
방에 새로 설치한 에어컨이 정말 효과적이에요.
The newly installed air conditioner in the room is really effective.
The word '설치한' here refers to the action of having installed the program before an instruction to restart follows.
프로그램 설치한 후에 시스템을 재시작하세요.
After installing the program, please restart the system.
In this sentence, '설치한' describes the equipment that was installed by the expert, emphasizing reliability due to professional installation.